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Huang Y, Yu Y, Hu R, Tang BZ. Multicomponent Polymerizations of Elemental Sulfur, CH 2Cl 2, and Aromatic Amines toward Chemically Recyclable Functional Aromatic Polythioureas. J Am Chem Soc 2024; 146:14685-14696. [PMID: 38717074 DOI: 10.1021/jacs.4c02155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The exploration of new polymer materials required the development of efficient, economic, robust, and scalable synthetic routes, taking energy consumption, environmental benefit, and sustainability into overall consideration. Herein, through retro-polymerization analysis of functional aromatic polythioureas, a multicomponent reaction of elemental sulfur, CH2Cl2, and aromatic amines was designed with the assistance of fluoride, and efficient, economic, and robust multicomponent polymerizations (MCPs) of these three abundantly available cheap monomers, elemental sulfur, CH2Cl2, and aromatic diamines, were developed to realize scalable conversion directly from sulfur to a series of functional aromatic polythioureas with high molecular weights (Mn up to 50,800 g/mol) in excellent yields (up to 98%). The synergistic cooperation of the strong and selective coordination of thiourea with gold ions and the redox property of aromatic polythiourea enable in situ reduction of Au3+ to elemental gold under a normal bench condition. Furthermore, the functional aromatic polythiourea could be chemically recycled through aminolysis with NH3·H2O to afford a diamine monomer in 83% isolated yield. The development of elemental sulfur-based MCP has brought the opportunity to access cost-effective and sustainable sulfur-containing functional polymer materials, which is anticipated to provide a solution for the utilization of sulfur waste and making profitable polymer materials.
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Affiliation(s)
- Yuzhang Huang
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
| | - Yongjiang Yu
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
| | - Rongrong Hu
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
| | - Ben Zhong Tang
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
- AIE Institute, Guangzhou 510530, China
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2
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Das B, Dahiya A, Patel BK. Isothiocyanates: happy-go-lucky reagents in organic synthesis. Org Biomol Chem 2024; 22:3772-3798. [PMID: 38656266 DOI: 10.1039/d4ob00281d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Owing to their unique structural features, isothiocyanates (ITCs) are a class of highly useful and inimitable reagents as the -NCS group serves both as electrophile and nucleophile in organic synthesis. ITCs share a rich legacy in organic, medicinal, and combinatorial chemistry. Compared to their oxygen equivalents, isocyanates, ITCs are easily available, less unpleasant, and somewhat less harmful to work with (mild conditions) which makes them happy-go-lucky reagents. Functionalized ITCs can finely tune the reactivity of the -NCS group and thus can be exploited in the late-stage functionalization processes. This review's primary aim is to outline ITC chemistry in the construction and derivatization of heterocycles through the lens of sustainability. For ease and brevity, the sections are divided based on reactive centers present in functionalized ITCs and modes of cyclisation. Scrutinizing their probable unexplored directions for future research studies is also addressed.
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Affiliation(s)
- Bubul Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
- Department of Chemistry, Bagadhar Brahma Kishan College, Jalah, Assam 781327, India
| | - Anjali Dahiya
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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3
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Maeda B, Murakami K. Recent advancement in the synthesis of isothiocyanates. Chem Commun (Camb) 2024; 60:2839-2864. [PMID: 38380440 DOI: 10.1039/d3cc06118c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Isothiocyanates exhibit various biological characteristics, including antimicrobial, anti-inflammatory, and anticancer properties. Their significance extends to synthetic chemistry, where they serve as valuable platforms for versatile transformations. Consequently, they have attracted the attention of biologists and chemists. This review summarizes recent advancements in the synthesis of isothiocyanates. Access to a variety of starting materials is important to prepare isothiocyanates with diverse structures. This review categorizes synthetic methods into three types based on the starting materials and functional groups: (i) type A, derived from primary amines; (ii) type B, derived from other nitrogen functional groups; and (iii) type C, derived from non-nitrogen groups. Recent trends in synthetic methods have revealed the prevalence of type-A reactions derived from primary amines. However, type B reactions have rarely been reported. Notably, over the past four years, there has been a notable increase in type C reactions, indicating a growing interest in non-nitrogen-derived isothiocyanates. Overall, this review not only outlines the advancements in the synthesis of isothiocyanates but also highlights trends in the methodology.
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Affiliation(s)
- Bumpei Maeda
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
| | - Kei Murakami
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
- Japanese Science and Technology Agency (JST)-PRESTO, Chiyoda, Tokyo 102-0076, Japan
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Heidari S, Alavinia S, Ghorbani-Vaghei R. Green synthesis of thiourea derivatives from nitrobenzenes using Ni nanoparticles immobilized on triazine-aminopyridine-modified MIL-101(Cr) MOF. Sci Rep 2023; 13:12964. [PMID: 37563182 PMCID: PMC10415257 DOI: 10.1038/s41598-023-40190-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/06/2023] [Indexed: 08/12/2023] Open
Abstract
Nanohybrid metal-organic frameworks (MOF) have recently been considered next-generation catalysts regarding their unique features like large surface-to-volume ratio, tailorable geometry, uniform pore sizes, and homogeneous distribution of active sites. In this report, we address the triazine-aminopyridine-modified 3D Cr-centred MOF MIL-101(Cr)-NH2 following a post-synthetic modification approach. The excellent chelating ability of triazine-aminopyridine was applied to immobilize Ni ions over the host matrix MOF. The as-synthesized material was physicochemically characterized using various analytical techniques like FT-IR, electron microscopy, EDS, elemental mapping, XRD, and ICP-OES. Subsequently, the material has been catalytically employed in synthesizing new thiourea derivatives by reacting to nitrobenzene derivatives and phenyl isocyanate. The catalyst was isolated by centrifugation and recycled in 6 consecutive runs without momentous loss of its reactivity.
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Affiliation(s)
- Sara Heidari
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamadan, 6517838683, Iran
| | - Sedigheh Alavinia
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamadan, 6517838683, Iran
| | - Ramin Ghorbani-Vaghei
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamadan, 6517838683, Iran.
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5
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Srinivas B, Shakeena K, Kota DL, Abhinav V, Eswar P, Geetha Sravani R, Sampath Pavan Kumar A, Indukuri K, Dhanaraju KA, Murali Krishna Kumar M, Alla SK. Iron(III)-Catalyzed Regioselective Synthesis of Electron-Rich Benzothiazoles from Aryl Isothiocyanates via C-H Functionalization. J Org Chem 2023; 88:4458-4471. [PMID: 36912001 DOI: 10.1021/acs.joc.2c03078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
We report herein a direct synthetic route for the preparation of 2-arylbenzothiazoles using aryl isothiocyanates and electron-rich arenes. The synthetic route involves triflic acid promoted addition of the arenes to aryl isothiocyanates followed by FeCl3-catalyzed C-S bond formation via C-H functionalization. The approach provides the advantage of synthesis of benzothiazoles without the conventional use of aryl aldehyde/carboxylic acid precursors employing the less expensive iron(III) catalyst.
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Affiliation(s)
- Bokka Srinivas
- Department of Chemistry, GITAM School of Science, GITAM (Deemed to be University), Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
| | - Kotari Shakeena
- Department of Chemistry, GITAM School of Science, GITAM (Deemed to be University), Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
| | - Durgeswari Lakkavarapu Kota
- Department of Chemistry, GITAM School of Science, GITAM (Deemed to be University), Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
| | - Valeti Abhinav
- Department of Chemistry, GITAM School of Science, GITAM (Deemed to be University), Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
| | - Pyla Eswar
- Department of Chemistry, GITAM School of Science, GITAM (Deemed to be University), Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
| | - Rongali Geetha Sravani
- Department of Chemistry, GITAM School of Science, GITAM (Deemed to be University), Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
| | - Anandam Sampath Pavan Kumar
- Department of Chemistry, GITAM School of Science, GITAM (Deemed to be University), Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
| | - Kiran Indukuri
- Chemistry-Discovery Research Lab, Dextro Synthesis Private Limited, Hyderabad, Telangana 500090, India
| | | | | | - Santhosh Kumar Alla
- Department of Chemistry, GITAM School of Science, GITAM (Deemed to be University), Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
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6
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Zheng L, Mei W, Zou X, Zhong Y, Wu Y, Deng L, Wang Y, Yang B, Guo W. DBU-Promoted Deaminative Thiolation of 1 H-Benzo[ d]imidazol-2-amines and Benzo[ d]oxazol-2-amines. J Org Chem 2023; 88:272-284. [PMID: 36521048 DOI: 10.1021/acs.joc.2c02297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A facile and efficient catalyst-/metal-/oxidant-free DBU-promoted deaminative thiolation reaction of 1H-benzo[d]imidazol-2-amines and benzo[d]oxazol-2-amines has been developed at room temperature conditions in a one-pot protocol. This practical three-component strategy represents a novel and environmentally friendly reaction pathway toward the straightforward synthesis of various 2-thio-1H-benzo[d]imidazoles and 2-thiobenzo[d]oxazoles using carbon disulfide as a sulfur source through C-N bond cleavage and C-S bond formation process. Different types of 1H-benzo[d]imidazol-2-amines, benzo[d]oxazol-2-amines, and organic bromides are suitable substrates. The gram-scale and late-stage modification experiments provide the potential applications based on this methodology in the field of organic and medicinal chemistry.
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Affiliation(s)
- Lvyin Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Weijie Mei
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xiaoying Zou
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yumei Zhong
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yingying Wu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Lei Deng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yihan Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Beining Yang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
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7
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Racheeti PB, Gunturu RB, Pinapati SR, Kowthalam A, Tamminana R, Rudraraju R. Hypervalent iodine(III) promoted synthesis of isothiocyanates in water. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2148222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Ratna Babu Gunturu
- Department of Chemistry, Acharya Nagarjuna University, Guntur, AP, India
| | | | - Anitha Kowthalam
- Department of Chemistry, Sri Krishna Devaraya University, Ananthapur, AP, India
| | - Ramana Tamminana
- Department of Chemistry, VIT-AP University, Amaravati, AP, India
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8
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Bhosle SD, Jadhav KA, Itage SV, Bandaru S, Bhosale RS, Yadav JS. Zn catalyzed a simple and convenient method for thiourea synthesis. J Sulphur Chem 2022. [DOI: 10.1080/17415993.2022.2126319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Siddhanath D. Bhosle
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
| | - Krishna A. Jadhav
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
| | - Shivanand V. Itage
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
| | - Sateesh Bandaru
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, People’s Republic of China
| | - Rajesh S. Bhosale
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
| | - Jhillu Singh Yadav
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
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9
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Mansour ST, Hashem AI, Abd‐El‐Maksoud MA, El‐Hussieny M, El‐Makawy AI, Abdel‐Aziem SH, Soliman FM. The synthesis and antineoplastic activities of thiaziridine, sulfidometylphosphonium, and dithiaphosphitane‐sulfide against the Ehrlich ascites carcinoma. Fundam Clin Pharmacol 2022; 36:536-552. [DOI: 10.1111/fcp.12751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 12/13/2021] [Accepted: 12/30/2021] [Indexed: 12/23/2022]
Affiliation(s)
- Shaimaa T. Mansour
- Organometallic and Organometalloid Chemistry Department National Research Centre Giza Dokki Egypt
| | - Ahmed I. Hashem
- Chemistry Department, Faculty of Science Ain Shams University Cairo Abassia Egypt
| | | | - Marwa El‐Hussieny
- Organometallic and Organometalloid Chemistry Department National Research Centre Giza Dokki Egypt
| | | | | | - Fouad M. Soliman
- Organometallic and Organometalloid Chemistry Department National Research Centre Giza Dokki Egypt
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10
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Yuan Y, Wang L, Porcheddu A, Colacino E, Solin N. Mechanochemical Preparation of Protein : hydantoin Hybrids and Their Release Properties. CHEMSUSCHEM 2022; 15:e202102097. [PMID: 34817915 PMCID: PMC9299789 DOI: 10.1002/cssc.202102097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/20/2021] [Indexed: 05/04/2023]
Abstract
Mechanochemistry is a versatile methodology that can be employed both for covalent bond formation in organic synthesis as well as a mediator to allow preparation novel colloidal dispersions for drug delivery. Herein, ball-milling was employed for the solid-state preparation of fluorescent hydrophobic hydantoins, followed by the unprecedented mechanochemically-mediated complexation of hydrophobic hydantoins within hydrophilic protein β-lactoglobulin (BLG) and BLG nanofibrils (BLGNFs). These hydantoin:protein materials were in turn incorporated into hydrogels. The effect of incorporation of hydantoins into proteins, as well as the effect of protein structure, on the release properties were then investigated. The conversion of BLG to BLGNFs led to a more sustained release demonstrating that heat treatment of BLG into BLGNFs could be employed to modify release properties. To the best of our knowledge, this is the first example where protein : hydantoin complexes were prepared by mechanochemical methodology and mechanochemistry was combined with self-assembly in order to prepare protein nanomaterials for drug-delivery applications. In addition, the use of the developed protein materials is not limited to delivery of drugs but can for example be employed as components of smart food (delivery of nutrients) or release systems of pesticides.
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Affiliation(s)
- Yusheng Yuan
- Department of Physics, Chemistry, and BiologyBiomolecular and Organic ElectronicsLinköping University581 83LinköpingSweden
| | - Lei Wang
- Department of Physics, Chemistry, and BiologyBiomolecular and Organic ElectronicsLinköping University581 83LinköpingSweden
| | - Andrea Porcheddu
- Department of Chemical and Geological SciencesUniversity of CagliariCittadella UniversitariaSS 554 bivio per Sestu09042MonserratoItaly
| | | | - Niclas Solin
- Department of Physics, Chemistry, and BiologyBiomolecular and Organic ElectronicsLinköping University581 83LinköpingSweden
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11
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Liu X, Li H, Yin X. NaOH-promoted one-pot aryl isothiocyanate synthesis under mild benchtop conditions. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1927031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xinyun Liu
- School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China
| | - Hang Li
- Key Laboratory of Functional Materials Chemistry of Guizhou Province, School of Chemistry and Materials Science, Guizhou Normal University, Guiyang, China
| | - Xiaogang Yin
- Key Laboratory of Functional Materials Chemistry of Guizhou Province, School of Chemistry and Materials Science, Guizhou Normal University, Guiyang, China
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12
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Panja S, Paul B, Jalal S, Ghosh T, Ranu BC. Mechanochemically Induced Chalcogenation of Bicyclic Arenes under Solvent‐, Ligand‐, Metal‐, and Oxidant‐Free Conditions. ChemistrySelect 2020. [DOI: 10.1002/slct.202003892] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Subir Panja
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur Kolkata 700032 India
| | - Biprajit Paul
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur Kolkata 700032 India
| | - Swapnadeep Jalal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur Kolkata 700032 India
| | - Tubai Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur Kolkata 700032 India
| | - Brindaban C. Ranu
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur Kolkata 700032 India
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13
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Zn, Cd and Hg complexes with unsymmetric thiourea derivatives; syntheses, free radical scavenging and enzyme inhibition essay. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128096] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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14
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Naz S, Zahoor M, Umar MN, Alghamdi S, Sahibzada MUK, UlBari W. Synthesis, characterization, and pharmacological evaluation of thiourea derivatives. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThioureas and their derivatives are organosulfur compounds having applications in numerous fields such as organic synthesis and pharmaceutical industries. Symmetric thiourea derivatives were synthesized by the reaction of various anilines with CS2. The synthesized compounds were characterized using the UV-visible and nuclear magnetic resonance (NMR) spectroscopic techniques. The compounds were screened forin vitroinhibition of α-amylase, α-glucosidase, acetylcholinesterase (AChE), and butyrylcholinesterase (BuChE) enzymes and for their antibacterial and antioxidant potentials. These compounds were fed to Swiss male albino mice to evaluate their toxicological effects and potential to inhibit glucose-6-phosphatase (G6Pase) inhibition. The antibacterial studies revealed that compound4was more active against the selected bacterial strains. Compound1was more active against 2,2-diphenyl-1-picrylhydrazyl and 2,2’-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radicals, AChE, BuChE, and α-glucosidase. Compound2was more potent against α-amylase and G6Pase. Toxicity studies showed that compound4is safe as it exerted no toxic effect on any of the hematological and biochemical parameters or on liver histology of the experimental animals at any studied dose rate. The synthesized compounds showed promising antibacterial and antioxidant potential and were very active (bothin vitroandin vivo) against G6Pase and moderately active against the other selected enzymes used in this study.
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Affiliation(s)
- Sumaira Naz
- Department of Chemistry, University of Malakand, Chakdara, Dir Lower, 18800 KPK, Pakistan
| | - Muhammad Zahoor
- Department of Chemistry, University of Malakand, Chakdara, Dir Lower, 18800 KPK, Pakistan
| | - Muhammad Naveed Umar
- Department of Chemistry, University of Malakand, Chakdara, Dir Lower, 18800 KPK, Pakistan
| | - Saad Alghamdi
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia
| | | | - Wasim UlBari
- Department of Chemistry, University of Malakand, Chakdara, Dir Lower, 18800 KPK, Pakistan
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15
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Development of (4-methoxyphenyl)-1H-tetrazol-5-amine regioisomers as a new class of selective antitubercular agents. Eur J Med Chem 2019; 186:111882. [PMID: 31753514 DOI: 10.1016/j.ejmech.2019.111882] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/01/2019] [Accepted: 11/11/2019] [Indexed: 01/06/2023]
Abstract
A series of halogenated (4-methoxyphenyl)-1H-tetrazol-5-amine regioisomers (1a-9a, 1b-9b) were synthesized from their corresponding thiourea analogues (1-9). The synthesis pathway was confirmed by an X-ray crystallographic studies of 1a, 1b and 5a. Title derivatives were tested for their in vitro antitubercular activity against standard, "wild-type" and atypical mycobacteria. The highest therapeutic potential was attributed to isomeric N-(bromophenyl)tetrazoles 8a and 9a. Their growth-inhibitory effect against multidrug-resistant Mycobacterium tuberculosis Spec. 210 was 8-16-fold stronger than that of the first-line tuberculostatics. Other new tetrazole-derived compounds were also more or equally effective towards that pathogen comparing to the established pharmaceuticals. Among non-tuberculous strains, Mycobacterium scrofulaceum was the most susceptible to the presence of the majority of tetrazole derivatives. The synergistic interaction was found between 9a and streptomycin, as well as the additivity of both 8a and 9a in pairs with isoniazid, rifampicin and ethambutol. None of the studied compounds displayed antibacterial or cytotoxic properties against normal and cancer cell lines, which indicated their highly selective antimycobacterial effects.
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16
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Janczewski Ł, Gajda A, Gajda T. Direct, Microwave-Assisted Synthesis of Isothiocyanates. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900105] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Łukasz Janczewski
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology, 116 Żeromski Str.; 90-924 Lodz Poland
| | - Anna Gajda
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology, 116 Żeromski Str.; 90-924 Lodz Poland
| | - Tadeusz Gajda
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology, 116 Żeromski Str.; 90-924 Lodz Poland
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17
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Piyanuch P, Sirirak J, Kamkaew A, Weeranantanapan O, Promarak V, Burgess K, Wanichacheva N. A Near‐Infrared Fluorescence Chemosensor Based on Isothiocyanate‐Aza‐BODIPY for Cyanide Detection at the Parts per Billion Level: Applications in Buffer Media and Living Cell Imaging. Chempluschem 2019; 84:252-259. [DOI: 10.1002/cplu.201800574] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/27/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Pornthip Piyanuch
- Department of Chemistry, Faculty of ScienceSilpakorn University Nakhon Pathom 73000 Thailand
| | - Jitnapa Sirirak
- Department of Chemistry, Faculty of ScienceSilpakorn University Nakhon Pathom 73000 Thailand
| | - Anyanee Kamkaew
- School of Chemistry, Institute of ScienceSuranaree University of Technology Nakhon Ratchasima 30000 Thailand
| | - Oratai Weeranantanapan
- School of Preclinical Science, Institute of ScienceSuranaree University of Technology Nakhon Ratchasima 30000 Thailand
| | - Vinich Promarak
- School of Molecular Science and EngineeringVidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
| | - Kevin Burgess
- Department of ChemistryTexas A & M University College Station TX 77842 USA
| | - Nantanit Wanichacheva
- Department of Chemistry, Faculty of ScienceSilpakorn University Nakhon Pathom 73000 Thailand
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18
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Ding C, Wang S, Sheng Y, Dai Q, Zhao Y, Liang G, Song Z. One-step construction of unsymmetrical thioureas and oxazolidinethiones from amines and carbon disulfide via a cascade reaction sequence. RSC Adv 2019; 9:26768-26772. [PMID: 35528578 PMCID: PMC9070531 DOI: 10.1039/c9ra04540f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 08/17/2019] [Indexed: 12/29/2022] Open
Abstract
A versatile and efficient route for the preparation of unsymmetrical thioureas and oxazolidinethiones from amines and carbon disulfide has been achieved via a cascade reaction sequence.
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Affiliation(s)
- Chaochao Ding
- Chemical Biology Research Center at School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
| | - Shaoli Wang
- Chemical Biology Research Center at School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
| | - Yaoguang Sheng
- Chemical Biology Research Center at School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
| | - Qian Dai
- Chemical Biology Research Center at School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
| | - Yunjie Zhao
- Chemical Biology Research Center at School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
| | - Guang Liang
- Chemical Biology Research Center at School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
| | - Zengqiang Song
- Chemical Biology Research Center at School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
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19
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Ziyaei Halimehjani A, Klepetářová B, Beier P. Synthesis of novel dithiocarbamates and xanthates using dialkyl azodicarboxylates: S N bond formation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Leonardi M, Villacampa M, Menéndez JC. Multicomponent mechanochemical synthesis. Chem Sci 2018; 9:2042-2064. [PMID: 29732114 PMCID: PMC5909673 DOI: 10.1039/c7sc05370c] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 01/28/2018] [Indexed: 12/22/2022] Open
Abstract
Historically, the use of mechanochemical methods in synthesis has been almost negligible, but their perception by the synthetic community has changed in recent years and they are on their way to becoming mainstream. However, the hybridization of mechanochemical synthesis with methodologies designed to increase synthetic efficiency by allowing the generation of several bonds in a single operation has taken off only recently, but it already constitutes a very promising approach to sustainable chemistry. In this context, we provide in this Perspective a critical summary and discussion of the main known synthetic methods based on mechanochemical multicomponent reactions.
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Affiliation(s)
- Marco Leonardi
- Unidad de Química Orgánica y Farmacéutica , Departamento de Química en Ciencias Farmacéuticas , Facultad de Farmacia , Universidad Complutense , 28040 Madrid , Spain .
| | - Mercedes Villacampa
- Unidad de Química Orgánica y Farmacéutica , Departamento de Química en Ciencias Farmacéuticas , Facultad de Farmacia , Universidad Complutense , 28040 Madrid , Spain .
| | - J Carlos Menéndez
- Unidad de Química Orgánica y Farmacéutica , Departamento de Química en Ciencias Farmacéuticas , Facultad de Farmacia , Universidad Complutense , 28040 Madrid , Spain .
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21
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Nagarajaiah H, Mishra AK, Moorthy JN. Mechanochemical solid-state synthesis of 2-aminothiazoles, quinoxalines and benzoylbenzofurans from ketones by one-pot sequential acid- and base-mediated reactions. Org Biomol Chem 2018; 14:4129-35. [PMID: 27072599 DOI: 10.1039/c6ob00351f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
α-Chloroketones - obtained by the atom-economical chlorination of ketones with trichloroisocyanuric acid (TCCA) in the presence of p-TSA under ball-milling conditions - were set up for a sequential base-mediated condensation reaction with thiourea/thiosemicarbazides, o-phenylenediamine and salicylaldehyde to afford 2-aminothiazoles, 2-hydrazinylthiazoles, quinoxalines and benzoylbenzofurans, respectively, in respectable yields. The viability of one-pot sequential acid- and base-mediated reactions in the solid state under ball-milling conditions is thus demonstrated.
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Affiliation(s)
- Honnappa Nagarajaiah
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India.
| | - Abhaya Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India.
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22
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23
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Affiliation(s)
- Davin Tan
- Department of Chemistry; McGill University; 801 Sherbrooke St.W. H3A0B8 Montreal Canada
| | - Tomislav Friščić
- Department of Chemistry; McGill University; 801 Sherbrooke St.W. H3A0B8 Montreal Canada
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24
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Štrukil V. Mechanochemical synthesis of thioureas, ureas and guanidines. Beilstein J Org Chem 2017; 13:1828-1849. [PMID: 28904627 PMCID: PMC5588497 DOI: 10.3762/bjoc.13.178] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/17/2017] [Indexed: 12/20/2022] Open
Abstract
In this review, the recent progress in the synthesis of ureas, thioureas and guanidines by solid-state mechanochemical ball milling is highlighted. While the literature is abundant on their preparation in conventional solution environment, it was not until the advent of solvent-free manual grinding using a mortar and pestle and automated ball milling that new synthetic opportunities have opened. The mechanochemical approach not only has enabled the quantitative synthesis of (thio)ureas and guanidines without using bulk solvents and the generation of byproducts, but it has also been established as a means to develop "click-type" chemistry for these classes of compounds and the concept of small molecule desymmetrization. Moreover, mechanochemistry has been demonstrated as an effective tool in reaction discovery, with emphasis on the reactivity differences in solution and in the solid state. These three classes of organic compounds share some structural features which are reflected in their physical and chemical properties, important for application as organocatalysts and sensors. On the other hand, the specific and unique nature of each of these functionalities render (thio)ureas and guanidines as the key constituents of pharmaceuticals and other biologically active compounds.
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Affiliation(s)
- Vjekoslav Štrukil
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
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25
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Xu Y, Li B, Zhang X, Fan X. Metal-Free Synthesis of 2-Aminobenzothiazoles via Iodine-Catalyzed and Oxygen-Promoted Cascade Reactions of Isothiocyanatobenzenes with Amines. J Org Chem 2017; 82:9637-9646. [PMID: 28812346 DOI: 10.1021/acs.joc.7b01683] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this paper, a highly efficient and sustainable synthesis of 2-aminobenzothiazoles through the cascade reactions of isothiocyanatobenzenes with primary or secondary amines by using iodine as a catalyst and oxygen as an oxidant is presented. Mechanistically, the formation of the title compounds involves the in situ formation of the required benzothiourea intermediate followed by its intramolecular cross dehydrogenative coupling of a C(sp2)-H bond and a S-H bond. To our knowledge, this should be the first example in which 2-aminobenzothiazoles are efficiently prepared from simple and cheap isothiocyanates and amines under metal-free conditions by using iodine as a catalyst and molecular oxygen as an oxidant with water as the byproduct. Compared with literature protocols, this method eliminates the use of ortho-halo-substituted precursors, expensive transition-metal catalysts, and hazardous oxidants.
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Affiliation(s)
- Yuanshuang Xu
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, China
| | - Bin Li
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, China
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26
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Mandapati U, Pinapati S, Rudraraju R. Copper promoted desulfurization towards the synthesis of isothiocyanates. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.11.086] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Li Z, Chen Y, Yin Y, Wang Z, Sun X. Convenient Synthesis of Unsymmetrical N,N′-disubstituted Thioureas in Water. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14760947474916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A simple and convenient two-step method has been developed and used to synthesise 25 (4 of which are novel) unsymmetrical N,N′-disubstituted thioureas in water. Alkylamines or variously substituted arylamines reacted smoothly with phenyl chlorothionoformate at room temperature to form thiocarbamates, which were then reacted with another alkyl- or arylamine in water at reflux to afford the unsymmetrical N,N′-disubstituted thioureas in good to excellent yields. Mild conditions, simple work-up, high yields as well as using water as solvent are the major advantages of the method.
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Affiliation(s)
- Zhengyi Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P.R. China
| | - Yuan Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P.R. China
| | - Yue Yin
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P.R. China
| | - Zhiming Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P.R. China
| | - Xiaoqiang Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P.R. China
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28
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Li Z, Liu D, Chen Y, Yin Y, Wang Z, Sun X. Practical synthesis of symmetrical thioureas and heterocyclic thiones in water. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14682481534021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A simple and practical protocol for the synthesis of symmetric thioureas and heterocyclic thiones has been developed. It involves the reaction of amines with phenyl chlorothionoformate in water to afford the symmetrical thioureas or heterocyclic thiones in good to excellent yields. Various amines including aromatic, aliphatic and chiral amines survived the reaction conditions. Mild conditions, simple work-up and high yields as well as using water as solvent are the major advantages of this protocol.
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Affiliation(s)
- Zhengyi Li
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou, 213164, P.R. China
| | - Dawei Liu
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou, 213164, P.R. China
| | - Yuan Chen
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou, 213164, P.R. China
| | - Yue Yin
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou, 213164, P.R. China
| | - Zhiming Wang
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou, 213164, P.R. China
| | - Xiaoqiang Sun
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou, 213164, P.R. China
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29
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Mocci R, Luca LD, Delogu F, Porcheddu A. An Environmentally Sustainable Mechanochemical Route to Hydroxamic Acid Derivatives. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600350] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rita Mocci
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche; SS 554 bivio per Sestu 09042 Monserrato (Ca Italy
| | - Lidia De Luca
- Università degli Studi di Sassari, Dipartimento di Chimica e Farmacia; via Vienna 2 07100 Sassari Italy
| | - Francesco Delogu
- Università degli Studi di Cagliari, Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali; via Marengo 2 09123 Cagliari Italy
| | - Andrea Porcheddu
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche; SS 554 bivio per Sestu 09042 Monserrato (Ca Italy
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30
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Wang FJ, Xu H, Xin M, Zhang Z. $$\hbox {I}_{2}$$ I 2 -mediated amination/cyclization of ketones with 2-aminopyridines under high-speed ball milling: solvent- and metal-free synthesis of 2,3-substituted imidazo[1,2-a]pyridines and zolimidine. Mol Divers 2016; 20:659-66. [DOI: 10.1007/s11030-016-9666-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 03/04/2016] [Indexed: 12/31/2022]
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31
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Zakeri M, Nasef MM, Abouzari-Lotf E, Moharami A, Heravi MM. Sustainable alternative protocols for the multicomponent synthesis of spiro-4H-pyrans catalyzed by 4-dimethylaminopyridine. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.03.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Štrukil V, Gracin D, Magdysyuk OV, Dinnebier RE, Friščić T. Trapping Reactive Intermediates by Mechanochemistry: Elusive ArylN-Thiocarbamoylbenzotriazoles as Bench-Stable Reagents. Angew Chem Int Ed Engl 2015; 54:8440-3. [DOI: 10.1002/anie.201502026] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Indexed: 11/11/2022]
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33
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Štrukil V, Gracin D, Magdysyuk OV, Dinnebier RE, Friščić T. Trapping Reactive Intermediates by Mechanochemistry: Elusive ArylN-Thiocarbamoylbenzotriazoles as Bench-Stable Reagents. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502026] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Zhang Z, Wang FJ, Wu HH, Tan YJ. Straightforward Synthesis of 2-Anilinobenzoxazoles and -benzothiazoles via Mechanochemical Ball-milling-promoted One-pot Reactions. CHEM LETT 2015. [DOI: 10.1246/cl.141127] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ze Zhang
- School of Biological and Chemical Engineering, Anhui Polytechnic University
| | - Fang-Jian Wang
- School of Biological and Chemical Engineering, Anhui Polytechnic University
| | - Hao-Hao Wu
- School of Biological and Chemical Engineering, Anhui Polytechnic University
| | - Ya-Jun Tan
- School of Biological and Chemical Engineering, Anhui Polytechnic University
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35
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Houton KA, Burslem GM, Wilson AJ. Development of solvent-free synthesis of hydrogen-bonded supramolecular polyurethanes. Chem Sci 2015; 6:2382-2388. [PMID: 29308152 PMCID: PMC5647484 DOI: 10.1039/c4sc03804e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 02/02/2015] [Indexed: 11/26/2022] Open
Abstract
A solvent free ball-milling method for the synthesis of small molecule and oligomeric carbamates is described that is applicable to supramolecular polymer synthesis.
In this work we describe the solvent free synthesis of supramolecular polyurethanes held together by heterocomplementary triple hydrogen bonding. We perform a systematic evaluation on the base catalyzed synthesis of small molecule ureas and carbamates from a range of isocyanates, amines and alcohols in solution and in the solid state using ball milling. These optimized procedures are then shown to be applicable to the synthesis of supramolecular polyurethanes using solvent-free methods.
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Affiliation(s)
- Kelly A Houton
- School of Chemistry , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK . ; ; Tel: +44 (0)113 3431409
| | - George M Burslem
- School of Chemistry , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK . ; ; Tel: +44 (0)113 3431409.,Astbury Centre for Structural Molecular Biology , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK
| | - Andrew J Wilson
- School of Chemistry , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK . ; ; Tel: +44 (0)113 3431409.,Astbury Centre for Structural Molecular Biology , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK
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36
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Zhang H, Liu RQ, Liu KC, Li QB, Li QY, Liu SZ. A one-pot approach to pyridyl isothiocyanates from amines. Molecules 2014; 19:13631-42. [PMID: 25185069 PMCID: PMC6271198 DOI: 10.3390/molecules190913631] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 08/27/2014] [Accepted: 08/28/2014] [Indexed: 11/16/2022] Open
Abstract
A one-pot preparation of pyridyl isothiocyanates (ITCs) from their corresponding amines has been developed. This method involves aqueous iron(III) chloride-mediated desulfurization of a dithiocarbamate salt that is generated in situ by treatment of an amine with carbon disulfide in the present of DABCO or sodium hydride. The choice of base is of decisive importance for the formation of the dithiocarbamate salts. This one-pot process works well for a wide range of pyridyl ITCs. Utilizing this protocol, some highly electron-deficient pyridyl and aryl ITCs are obtained in moderate to good yields.
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Affiliation(s)
- Hao Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Rui-Quan Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Ke-Chang Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Qi-Bo Li
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Qing-Yang Li
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Shang-Zhong Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
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37
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Tan YJ, Zhang Z, Wang FJ, Wu HH, Li QH. Mechanochemical milling promoted solvent-free imino Diels–Alder reaction catalyzed by FeCl3: diastereoselective synthesis of cis-2,4-diphenyl-1,2,3,4-tetrahydroquinolines. RSC Adv 2014. [DOI: 10.1039/c4ra05252h] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cis-2,4-diphenyl-1,2,3,4-tetrahydroquinolines were diastereoselectively synthesized by FeCl3-promoted solvent-free Diels–Alder reaction of in situ generated imine with styrene under ball milling.
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Affiliation(s)
- Ya-Jun Tan
- School of Biological and Chemical Engineering
- Anhui Polytechnic University
- Wuhu, China
| | - Ze Zhang
- School of Biological and Chemical Engineering
- Anhui Polytechnic University
- Wuhu, China
| | - Fang-Jian Wang
- School of Biological and Chemical Engineering
- Anhui Polytechnic University
- Wuhu, China
| | - Hao-Hao Wu
- School of Biological and Chemical Engineering
- Anhui Polytechnic University
- Wuhu, China
| | - Qing-Hai Li
- School of Biological and Chemical Engineering
- Anhui Polytechnic University
- Wuhu, China
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38
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Zhang Z, Tan YJ, Wang CS, Wu HH. One-Pot Synthesis of 3,5-Diphenyl-1H-pyrazoles from Chalcones and Hydrazine under Mechanochemical Ball Milling. HETEROCYCLES 2014. [DOI: 10.3987/com-13-12867] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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39
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Mukherjee N, Chatterjee T, Ranu BC. Reaction under Ball-Milling: Solvent-, Ligand-, and Metal-Free Synthesis of Unsymmetrical Diaryl Chalcogenides. J Org Chem 2013; 78:11110-4. [DOI: 10.1021/jo402071b] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Nirmalya Mukherjee
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Tanmay Chatterjee
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Brindaban C. Ranu
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
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