1
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Goulart TAC, Recchi AMS, Back DF, Zeni G. Selective 5‐Exo‐Dig versus 6‐Endo‐Dig Cyclization of Benzoimidazole Thiols with Propargyl Alcohols. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tales A. C. Goulart
- Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM Santa Maria, Rio Grande do Sul 97105-900 Brazil
| | - Ana M. S. Recchi
- Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM Santa Maria, Rio Grande do Sul 97105-900 Brazil
| | - Davi F. Back
- Laboratório de Materiais Inorgânicos Departamento de Química, UFSM Santa Maria, Rio Grande do Sul 97105-900 Brazil
| | - Gilson Zeni
- Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM Santa Maria, Rio Grande do Sul 97105-900 Brazil
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2
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Makhal PN, Nandi A, Kaki VR. Insights into the Recent Synthetic Advances of Organoselenium Compounds. ChemistrySelect 2021. [DOI: 10.1002/slct.202004029] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Priyanka N. Makhal
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Arijit Nandi
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Venkata Rao Kaki
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
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3
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Zhu G, Ma L, Zhang K, Zhou Z, Song H, Yi W. Cascade Reductive Rearrangement for the Stereoselective Synthesis of Multifunctional Piperidinones: A Combined Experimental and Computational Study. ChemistrySelect 2020. [DOI: 10.1002/slct.201904106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Guoxun Zhu
- School of Chemical Engineering and TechnologySun Yat-sen University 135 Xin Gang West Road Guangzhou 510275 P.R. China
| | - Lei Ma
- Key Laboratory of Molecular Target and Clinical Pharmacology & the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University Guangzhou, Guangdong 511436 P. R. China
| | - Kaixin Zhang
- School of Chemical Engineering and TechnologySun Yat-sen University 135 Xin Gang West Road Guangzhou 510275 P.R. China
| | - Zhi Zhou
- Key Laboratory of Molecular Target and Clinical Pharmacology & the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University Guangzhou, Guangdong 511436 P. R. China
| | - Huacan Song
- School of Chemical Engineering and TechnologySun Yat-sen University 135 Xin Gang West Road Guangzhou 510275 P.R. China
| | - Wei Yi
- School of Chemical Engineering and TechnologySun Yat-sen University 135 Xin Gang West Road Guangzhou 510275 P.R. China
- Key Laboratory of Molecular Target and Clinical Pharmacology & the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University Guangzhou, Guangdong 511436 P. R. China
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4
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Wang S, Li X, Zang J, Liu M, Zhang S, Jiang G, Ji F. Palladium-Catalyzed Multistep Tandem Carbonylation/N-Dealkylation/Carbonylation Reaction: Access to Isatoic Anhydrides. J Org Chem 2020; 85:2672-2679. [PMID: 31887040 DOI: 10.1021/acs.joc.9b02771] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A novel and efficient synthesis of isatoic anhydride derivatives was developed via palladium-catalyzed multistep tandem carbonylation/N-dealkylation/carbonylation reaction with alkyl as the leaving group and tertiary anilines as nitrogen nucleophiles. This approach features good functional group compatibility and readily available starting materials. Furthermore, it provided a convenient approach for the synthesis of biologically and medicinally useful evodiamine.
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Affiliation(s)
- Shoucai Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering , Guilin University of Technology , 12 Jiangan Road , Guilin 541004 , China
| | - Xuan Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering , Guilin University of Technology , 12 Jiangan Road , Guilin 541004 , China
| | - Jiawang Zang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering , Guilin University of Technology , 12 Jiangan Road , Guilin 541004 , China
| | - Meichen Liu
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering , Guilin University of Technology , 12 Jiangan Road , Guilin 541004 , China
| | - Siyu Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering , Guilin University of Technology , 12 Jiangan Road , Guilin 541004 , China
| | - Guangbin Jiang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering , Guilin University of Technology , 12 Jiangan Road , Guilin 541004 , China
| | - Fanghua Ji
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering , Guilin University of Technology , 12 Jiangan Road , Guilin 541004 , China
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5
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Goulart TAC, Kazmirski JAG, Back DF, Zeni G. Cyclization of Thiopropargyl Benzimidazoles by Combining Iron(III) Chloride and Diorganyl Diselenides. J Org Chem 2019; 84:14113-14126. [PMID: 31588752 DOI: 10.1021/acs.joc.9b02276] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A practical synthetic approach to the synthesis of 3-(organoselenyl)-imidazothiazines was developed. The methodology involved the regioselective 6-endo-dig cyclization of thiopropargyl benzimidazoles promoted by diorganyl diselenides and iron(III) chloride. The investigation to determine the best reaction conditions indicated the use of thiopropargyl benzimidazoles (0.25 mmol) with diorganyl diselenides (1.0 equiv) and iron(III) chloride (2.0 equiv) in dichloromethane at 40 °C for 30 min to be optimal. Under these conditions, the scope of the substrates was evaluated varying the structures of thiopropargyl benzimidazoles and diorganyl diselenides giving 28 3-(organoselenyl)-imidazothiazines in moderate to good yields. The reaction conditions were also applicable to diorganyl ditellurides; however, they did not work for diorganyl disulfides. The mechanism studies were carried out indicating that the cyclization proceeds via a cooperative action of diorganyl diselenides and iron(III) chloride, but a direct electrophilic cyclization, promoted by the in situ formed electrophilic organoselenium species, cannot be ruled out.
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6
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Kim DY, Dao PDQ, Yoon NS, Cho CS. Synthesis of Pyrrolone‐ and Isoindolinone‐Fused Benzimidazole‐4,7‐diones by Stepwise Palladium‐Catalyzed Carbonylative Cyclization and Oxidation. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900423] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Dong Young Kim
- Department of Applied ChemistryKyungpook National University 80 Daehakro Bukgu, Daegu 41566 Republic of Korea
| | - Pham Duy Quang Dao
- Department of Applied ChemistryKyungpook National University 80 Daehakro Bukgu, Daegu 41566 Republic of Korea
| | - Nam Sik Yoon
- Department of Textile System EngineeringKyungpook National University 80 Daehakro Bukgu, Daegu 41566 Republic of Korea
| | - Chan Sik Cho
- Department of Applied ChemistryKyungpook National University 80 Daehakro Bukgu, Daegu 41566 Republic of Korea
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7
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Saranya S, Rohit KR, Radhika S, Anilkumar G. Palladium-catalyzed multicomponent reactions: an overview. Org Biomol Chem 2019; 17:8048-8061. [PMID: 31410440 DOI: 10.1039/c9ob01538h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This first review on this topic focuses on the developments in the chemistry of Pd-catalyzed multi-component reactions (MCRs). MCRs are generally atom economic, ideal and eco-friendly reactions, and often the final products are generated almost without any by-products. In this review, the developments in Pd-catalyzed MCRs are categorized based on the products formed such as acyclic compounds, carbocyclic compounds, heterocyclic compounds and miscellaneous compounds. MCRs have great applications in various fields like medicinal chemistry, combinatorial synthesis, heterocyclic chemistry etc. and this review covers the literature up to 2019.
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Affiliation(s)
- Salim Saranya
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P O, Kottayam, Kerala 686 560, India.
| | - K R Rohit
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P O, Kottayam, Kerala 686 560, India.
| | - Sankaran Radhika
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P O, Kottayam, Kerala 686 560, India.
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P O, Kottayam, Kerala 686 560, India. and Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University, Priyadarsini Hills P O, Kottayam, Kerala 686 560, India
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8
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Abstract
In this account, we review our efforts in the field of carbonylation reactions promoted by palladium iodide-based catalysts, which have proven to be particularly efficient in diverse kinds of carbonylation processes (oxidative carbonylations as well as additive and substitutive carbonylations). Particularly in the case of oxidative carbonylations, more emphasis has been given to the most recent results and applications.
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9
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Gabriele B, Mancuso R, Veltri L, Ziccarelli I, Della Ca' N. Palladium-Catalyzed Double Cyclization Processes Leading to Polycyclic Heterocycles: Recent Advances. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900481] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bartolo Gabriele
- Laboratory of Industrial and Synthetic Organic Chemistry; Department of Chemistry and Chemical Technologies; University of Calabria;; Via Pietro Bucci 12 C 87036 Arcavacata di Rende (CS) Italy
| | - Raffaella Mancuso
- Laboratory of Industrial and Synthetic Organic Chemistry; Department of Chemistry and Chemical Technologies; University of Calabria;; Via Pietro Bucci 12 C 87036 Arcavacata di Rende (CS) Italy
| | - Lucia Veltri
- Laboratory of Industrial and Synthetic Organic Chemistry; Department of Chemistry and Chemical Technologies; University of Calabria;; Via Pietro Bucci 12 C 87036 Arcavacata di Rende (CS) Italy
| | - Ida Ziccarelli
- Laboratory of Industrial and Synthetic Organic Chemistry; Department of Chemistry and Chemical Technologies; University of Calabria;; Via Pietro Bucci 12 C 87036 Arcavacata di Rende (CS) Italy
| | - Nicola Della Ca'
- Department of Chemistry; Life Sciences and Environmental Sustainability; University of Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
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10
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Chenna Reddy ML, Patil VB, Nawaz Khan FR, Saravanan V. Synthesis of Imidazo[1,2‐
a
]pyridines and Imidazo[2,1‐
b
]thiazoles Attached to a Cycloalkyl or Saturated Heterocycle Containing a Tertiary Hydroxy Substitution. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3454] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- M. L. Chenna Reddy
- Medicinal ChemistryJubilant Biosys Ltd 96, Industrial Suburb, 2nd Stage, Yeshwanthpur Bangalore 560022 India
- Department of Chemistry, School of Advanced Sciences (SAS)VIT Vellore 632014 Tamil Nadu India
| | - Vineetkumar B. Patil
- Medicinal ChemistryJubilant Biosys Ltd 96, Industrial Suburb, 2nd Stage, Yeshwanthpur Bangalore 560022 India
| | | | - Vadivelu Saravanan
- Medicinal ChemistryJubilant Biosys Ltd 96, Industrial Suburb, 2nd Stage, Yeshwanthpur Bangalore 560022 India
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11
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Recent Advances in the Catalytic Synthesis of Imidazolidin-2-ones and Benzimidazolidin-2-ones. Catalysts 2019. [DOI: 10.3390/catal9010028] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
2-Imidazolidinone and its analogues are omnipresent structural motifs of pharmaceuticals, natural products, chiral auxiliaries, and intermediates in organic syntheses. Over the years, continuous efforts have been addressed to the development of sustainable and more efficient protocols for the synthesis of these heterocycles. This review gives a summary of the catalytic strategies to access imidazolidin-2-ones and benzimidazolidin-2-ones that have appeared in the literature from 2010 to 2018. Particularly important contributions beyond the timespan will be mentioned. The review is organized in four main chapters that identify the most common approaches to imidazolidin-2-one derivatives: (1) the direct incorporation of the carbonyl group into 1,2-diamines, (2) the diamination of olefins, (3) the intramolecular hydroamination of linear urea derivatives and (4) aziridine ring expansion. Methods not included in this classification will be addressed in the miscellaneous section.
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12
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A New Tool in the Quest for Biocompatible Phthalocyanines: Palladium Catalyzed Aminocarbonylation for Amide Substituted Phthalonitriles and Illustrative Phthalocyanines Thereof. Catalysts 2018. [DOI: 10.3390/catal8100480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The amide peptide bond type linkage is one of the most natural conjugations available, present in many biological synthons and pharmaceutical drugs. Hence, aiming the direct conjugation of potentially biologically active compounds to phthalocyanines, herein we disclose a new strategy for direct modulation of phthalonitriles, inspired by an attractive synthetic strategy for the preparation of carboxamides based on palladium-catalyzed aminocarbonylation of aryl halides in the presence of carbon monoxide (CO) which, to our knowledge, has never been used to prepare amide-substituted phthalonitriles, the natural precursors for the synthesis of phthalocyanines. Some examples of phthalocyanines prepared thereof are also reported, along with their full spectroscopic characterization and photophysical properties initial assessment.
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13
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Sun K, Jin S, Zhu J, Zhang X, Gao M, Zhang W, Lu T, Du D. N-Heterocyclic Carbene-Catalyzed in situ
Activation of Alkynyl Acids for C−S Bond Formation: Access to Imidazo[2,1-b
][1,3]thiazinones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800857] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kewen Sun
- State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University, Nanjing; 210009 People's Republic of China
| | - Shiyi Jin
- State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University, Nanjing; 210009 People's Republic of China
| | - Jindong Zhu
- State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University, Nanjing; 210009 People's Republic of China
| | - Xinmiao Zhang
- State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University, Nanjing; 210009 People's Republic of China
| | - Maoyu Gao
- State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University, Nanjing; 210009 People's Republic of China
| | - Wanqi Zhang
- State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University, Nanjing; 210009 People's Republic of China
| | - Tao Lu
- State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University, Nanjing; 210009 People's Republic of China
| | - Ding Du
- State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University, Nanjing; 210009 People's Republic of China
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14
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Mancuso R, Ziccarelli I, Chimento A, Marino N, Della Ca' N, Sirianni R, Pezzi V, Gabriele B. Catalytic Double Cyclization Process for Antitumor Agents against Breast Cancer Cell Lines. iScience 2018; 3:279-288. [PMID: 30428327 PMCID: PMC6137400 DOI: 10.1016/j.isci.2018.04.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 03/23/2018] [Accepted: 04/26/2018] [Indexed: 01/22/2023] Open
Abstract
The development of efficient synthetic strategies for the discovery of novel antitumor molecules is a major goal in current research. In this context, we report here a catalytic double cyclization process leading to bicyclic heterocycles with significant antitumor activity on different human breast cancer (BC) cell lines. The products, 6,6a-dihydrofuro[3,2-b]furan-2(5H)-ones, were obtained in one step, starting from simple substrates (4-yne-1,3-diols, CO, and O2), under the catalytic action of PdI2 in conjunction with KI. These compounds have significant antiproliferative activity in vitro on human BC cell lines, both hormone receptor positive (MCF-7) and triple negative (triple-negative breast cancer [TNBC]; MDA-MB-231 and MDAMB-468), while exhibiting practically no effects on normal MCF-10A (human mammary epithelial) and 3T3-L1 (murine fibroblasts) cells. Thus, these compounds have the potential to expand the therapeutic options against BC, and in particular, against its most aggressive forms (TNBCs). Moreover, the present synthetic approach may provide an economic benefit for their production.
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Affiliation(s)
- Raffaella Mancuso
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende, Rende (CS), Italy.
| | - Ida Ziccarelli
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende, Rende (CS), Italy
| | - Adele Chimento
- Department of Pharmacy and Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Rende (CS), Italy
| | - Nadia Marino
- Department of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 14/C, 87036 Arcavacata di Rende, Rende (CS), Italy
| | - Nicola Della Ca'
- Department of Life Sciences and Environmental Sustainability (SCVSA), University of Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy
| | - Rosa Sirianni
- Department of Pharmacy and Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Rende (CS), Italy
| | - Vincenzo Pezzi
- Department of Pharmacy and Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Rende (CS), Italy
| | - Bartolo Gabriele
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende, Rende (CS), Italy.
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15
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Veltri L, Giofrè SV, Devo P, Romeo R, Dobbs AP, Gabriele B. A Palladium Iodide-Catalyzed Oxidative Aminocarbonylation–Heterocyclization Approach to Functionalized Benzimidazoimidazoles. J Org Chem 2018; 83:1680-1685. [DOI: 10.1021/acs.joc.7b03167] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lucia Veltri
- Laboratory
of Industrial and Synthetic Organic Chemistry (LISOC), Department
of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci 12/C, 87036 Arcavacata di Rende (CS), Italy
| | - Salvatore V. Giofrè
- Dipartimento
di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, University of Messina, Via SS Annunziata, 98168 Messina, Italy
| | - Perry Devo
- School
of Science, University of Greenwich, Central Avenue,
Chatham Maritime, Kent ME4 4TB, U.K
| | - Roberto Romeo
- Dipartimento
di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, University of Messina, Via SS Annunziata, 98168 Messina, Italy
| | - Adrian P. Dobbs
- School
of Science, University of Greenwich, Central Avenue,
Chatham Maritime, Kent ME4 4TB, U.K
| | - Bartolo Gabriele
- Laboratory
of Industrial and Synthetic Organic Chemistry (LISOC), Department
of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci 12/C, 87036 Arcavacata di Rende (CS), Italy
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16
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Shen C, Spannenberg A, Auer M, Wu XF. Utilizing an Encapsulated Solution of Reagents to Achieve the Four-Component Synthesis of (Benzo)Thiophene Derivatives. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601343] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chaoren Shen
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Auer
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Straße 29a 18059 Rostock Germany
- Department of Chemistry; Zhejiang Sci-Tech University; Xiasha Campus; Hangzhou 310018 People's Republic of China
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17
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Ambethkar S, Vellimalai M, Padmini V, Bhuvanesh N. Iodine-mediated C–N and C–S bond formation: regioselective synthesis of benzo[4,5]imidazo[2,1-b]thiazoles. NEW J CHEM 2017. [DOI: 10.1039/c6nj02102f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The regioselective synthesis of benzo[4,5]imidazo[2,1-b]thiazole derivatives via amination (C–N) and intramolecular cyclization (C–S) reactions in the presence of molecular iodine has been reported. This method is base and metal free and features inexpensive catalysts, with a simple procedure and a short reaction time.
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Affiliation(s)
- Sethurajan Ambethkar
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai 625021
- India
| | - Muthalu Vellimalai
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai 625021
- India
| | - Vediappen Padmini
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai 625021
- India
| | - Nattamai Bhuvanesh
- X-ray Diffraction Laboratory
- Department of Chemistry
- Texas A & M University
- College Station
- USA
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18
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Battula SRK, Rama Kishore Putta VP, Subbareddy GV, Chakravarthy IE, Saravanan V. A divergent and metal free synthesis of sulfoximine tethered imidazoles, imidazopyridines, imidazothiazoles, imidazobenzothiazines, thiazoles and selenazoles. Org Biomol Chem 2017; 15:3742-3755. [DOI: 10.1039/c7ob00601b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A divergent and metal free approach has been successfully developed for the synthesis of sulfoximine tethered heterocycles from a α-bromoalkanone building block.
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Affiliation(s)
- S. R. K. Battula
- Medicinal Chemistry
- Jubilant Biosys Ltd
- Bangalore
- India
- Department of Chemistry
| | | | - G. V. Subbareddy
- Department of Chemistry
- Jawaharlal Nehru Technological University Ananthapur College of Engineering Pulivendula
- Kadapa
- India
| | | | - V. Saravanan
- Medicinal Chemistry
- Jubilant Biosys Ltd
- Bangalore
- India
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19
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Shen C, Wu XF. Palladium-Catalyzed Carbonylative Multicomponent Reactions. Chemistry 2016; 23:2973-2987. [DOI: 10.1002/chem.201603623] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Indexed: 01/16/2023]
Affiliation(s)
- Chaoren Shen
- Leibniz-Institut für Katalyse (LIKAT) an der Universität Rostock e. V.; Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse (LIKAT) an der Universität Rostock e. V.; Albert-Einstein-Str. 29a 18059 Rostock Germany
- Department of Chemistry; Zhejiang Sci-Tech University; Xiasha Campus Hangzhou, Zhejiang Province 310018 P. R. China
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20
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Auto-Tandem Catalysis in Ionic Liquids: Synthesis of 2-Oxazolidinones by Palladium-Catalyzed Oxidative Carbonylation of Propargylic Amines in EmimEtSO₄. Molecules 2016; 21:molecules21070897. [PMID: 27399662 PMCID: PMC6273147 DOI: 10.3390/molecules21070897] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 07/01/2016] [Accepted: 07/05/2016] [Indexed: 01/18/2023] Open
Abstract
A convenient carbonylative approach to 2-oxazolidinone derivatives carried out using an ionic liquid (1-ethyl-3-methylimidazolium ethyl sulfate, EmimEtSO₄) as the solvent is presented. It is based on the sequential concatenation of two catalytic cycles, both catalyzed by the same metal species (auto-tandem catalysis): the first cycle corresponds to the oxidative monoaminocarbonylation of the triple bond of propargylic amines to give the corresponding 2-ynamide intermediates, while the second one involves the cyclocarbonylation of the latter to yield 2-(2-oxooxazolidin-5-ylidene)-acetamides. Reactions are carried out using a simple catalytic system consisting of PdI₂ in conjunction with an excess of KI, and the catalyst/solvent system could be recycled several times without appreciable loss of activity after extraction of the organic product with Et₂O.
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Veltri L, Paladino V, Plastina P, Gabriele B. A Palladium Iodide-Catalyzed Cyclocarbonylation Approach to Thiadiazafluorenones. J Org Chem 2016; 81:6106-11. [DOI: 10.1021/acs.joc.6b01028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lucia Veltri
- Laboratory
of Industrial and Synthetic Organic Chemistry (LISOC), Department
of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende (CS), Italy
| | - Veronica Paladino
- Laboratory
of Industrial and Synthetic Organic Chemistry (LISOC), Department
of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende (CS), Italy
| | - Pierluigi Plastina
- Department
of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 14/C, 87036 Arcavacata di Rende (CS), Italy
| | - Bartolo Gabriele
- Laboratory
of Industrial and Synthetic Organic Chemistry (LISOC), Department
of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende (CS), Italy
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