1
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Nichinde CB, Patil BR, Chaudhari SS, Mali BP, Gonnade RG, Kinage AK. Organocatalysed one-pot three component synthesis of 3,3'-disubstituted oxindoles featuring an all-carbon quaternary center and spiro[2 H-pyran-3,4'-indoline]. RSC Adv 2023; 13:13206-13212. [PMID: 37123998 PMCID: PMC10140734 DOI: 10.1039/d3ra00510k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/02/2023] [Indexed: 05/02/2023] Open
Abstract
A simple and efficient methodology for the one-pot synthesis of 3,3'-disubstituted oxindoles featuring an all-carbon quaternary center has been demonstrated through l-proline catalysed three-component reaction based on sequential Knoevenagel condensation/Michael addition and also one-pot synthesis of spiro[2H-pyran-3,4'-indoline] through consecutive Knoevenagel condensation/Michael addition/reduction/cyclization reactions from readily available isatin derivatives, malononitrile, and ketones. The present methodology presents several advantages, including simple reaction set-up, short reaction times, and easy to work-up. Also, this strategy offers broad substrate scope with excellent yields and high atom economy, under mild reaction conditions.
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Affiliation(s)
- Chandrakant B Nichinde
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory Pune India-410 008
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201 002 India
| | - Baliram R Patil
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory Pune India-410 008
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201 002 India
| | - Suryakant S Chaudhari
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory Pune India-410 008
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201 002 India
| | - Bhupendra P Mali
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201 002 India
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory Pune India-410 008
| | - Rajesh G Gonnade
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201 002 India
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory Pune India-410 008
| | - Anil K Kinage
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory Pune India-410 008
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201 002 India
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2
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Fan T, Song J, Gong L. Asymmetric Redox Allylic Alkylation to Access 3,3′‐Disubstituted Oxindoles Enabled by Ni/NHC Cooperative Catalysis. Angew Chem Int Ed Engl 2022; 61:e202201678. [DOI: 10.1002/anie.202201678] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Tao Fan
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Jin Song
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Liu‐Zhu Gong
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
- Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Hefei 230026 China
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3
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Fan T, Song J, Gong L. Asymmetric Redox Allylic Alkylation to Access 3,3′‐Disubstituted Oxindoles Enabled by Ni/NHC Cooperative Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tao Fan
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Jin Song
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Liu‐Zhu Gong
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
- Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Hefei 230026 China
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4
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Yang F, Hu Y, Wang L, Wu M, Yuan X, Liu Z, Li X, Wang Z, Zheng H. Palladium‐Catalyzed Coupling Reaction of o‐Alkenyl Chloroformylaniline with o‐Alkynylaniline: An Approach to Indolylmethyl Oxindole. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fanpeng Yang
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Yina Hu
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Lu Wang
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Miaomiao Wu
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Xiaowen Yuan
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Zhigang Liu
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Xiuhuan Li
- Northwest A&F University: Northwest Agriculture and Forestry University State Key Laboratory of Crop Stress Biology for Arid Areas CHINA
| | - Zhengshen Wang
- Northwest Agriculture University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Huaiji Zheng
- Northwest Agriculture and Forestry University College of Chemistry and Pharmacy 3 Taicheng Road 712100 Yangling CHINA
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5
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Zhu Y, Egap E. Light-Mediated Polymerization Induced by Semiconducting Nanomaterials: State-of-the-Art and Future Perspectives. ACS POLYMERS AU 2021; 1:76-99. [PMID: 36855427 PMCID: PMC9954404 DOI: 10.1021/acspolymersau.1c00014] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Direct capture of solar energy for chemical transformation via photocatalysis proves to be a cost-effective and energy-saving approach to construct organic compounds. With the recent growth in photosynthesis, photopolymerization has been established as a robust strategy for the production of specialty polymers with complex structures, precise molecular weight, and narrow dispersity. A key challenge in photopolymerization is the scarcity of effective photomediators (photoinitiators, photocatalysts, etc.) that can provide polymerization with high yield and well-defined polymer products. Current efforts on developing photomediators have mainly focused on organic dyes and metal complexes. On the other hand, nanomaterials (NMs), particularly semiconducting nanomaterials (SNMs), are suitable candidates for photochemical reactions due to their unique optical and electrical properties, such as high absorption coefficients, large charge diffusion lengths, and broad absorption spectra. This review provides a comprehensive insight into SNMs' photomediated polymerizations and highlights the roles SNMs play in photopolymerizations, types of polymerizations, applications in producing advanced materials, and the future directions.
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Affiliation(s)
- Yifan Zhu
- †Department
of Materials Science and Nanoengineering and ‡Department of Chemical and Biomolecular
Engineering, Rice University, Houston, Texas 77005, United States
| | - Eilaf Egap
- †Department
of Materials Science and Nanoengineering and ‡Department of Chemical and Biomolecular
Engineering, Rice University, Houston, Texas 77005, United States,
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6
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Yuan SP, Zhang XY, Jia YQ, Wang ZH, Zhao JQ, You Y, Zhou MQ, Yuan WC. Catalytic asymmetric coupling of vinylogous species via deconjugated butenolide addition to vinylogous imines in situ generated from arylsulfonyl indoles. Chem Commun (Camb) 2021; 57:4938-4941. [PMID: 33876161 DOI: 10.1039/d1cc00777g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An efficient catalytic asymmetric coupling of vinylogous species is developed via deconjugated butenolide addition to vinylogous imines in situ generated from arylsulfonyl indoles. With quinine-derived bifunctional squaramide as the catalyst, a series of structurally diverse enantioenriched sec-alkyl-3-substituted indoles containing valuable γ,γ-disubstituted butenolide moieties and adjacent quaternary-tertiary stereocenters are obtained in synthetically viable results (up to 97% yield, 77 : 23 dr and 97% ee).
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Affiliation(s)
- Shu-Pei Yuan
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China and Institute for Advanced Study, Chengdu University, Chengdu 610106, China. and University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xia-Yan Zhang
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China and Institute for Advanced Study, Chengdu University, Chengdu 610106, China. and University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yun-Qing Jia
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China and Institute for Advanced Study, Chengdu University, Chengdu 610106, China. and University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
| | - Yong You
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
| | - Ming-Qiang Zhou
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Wei-Cheng Yuan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
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7
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Ziarani GM, Javadi F, Mohajer F. The Molecular Diversity Scope of Oxindole Derivatives in Organic Synthesis. CURR ORG CHEM 2021. [DOI: 10.2174/1385272825666210111112814] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The role of oxindole derivatives is discussed as starting materials in diverse organic
reactions, including two and more components, between the years 2014 until 2020. Oxindoles
are famous because of their biological properties. For instance, chromanone-fused
polycyclic pyrrolidinyl-dispirooxindoles, functionalized polycyclic spiro-fused carbocyclicoxindole,
and 3,3-disubstituted oxindoles have anti-cancer, anti-tumor, and anti-microbial
properties, respectively. Therefore, various methods for synthesizing the oxindole structures
have received much attention in organic chemistry.
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Affiliation(s)
| | - Fatemeh Javadi
- Department of Chemistry, Alzahra University, Tehran,Iran
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8
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Parella R, Jakkampudi S, Zhao JC. Recent Applications of Asymmetric Organocatalytic Methods in Total Synthesis. ChemistrySelect 2021. [DOI: 10.1002/slct.202004196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ramarao Parella
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio, Texas 78249-0698 USA
| | - Satish Jakkampudi
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio, Texas 78249-0698 USA
| | - John C.‐G. Zhao
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio, Texas 78249-0698 USA
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9
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Kaur BP, Kaur J, Chimni SS. Arenesulfonyl indole: new precursor for diversification of C-3 functionalized indoles. RSC Adv 2021; 11:2126-2140. [PMID: 35424187 PMCID: PMC8693840 DOI: 10.1039/d0ra09133b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/16/2020] [Indexed: 12/11/2022] Open
Abstract
Arenesulfonyl indoles, bearing a good leaving group, are effective precursors for vinylogous imine intermediates which are generated in situ under basic conditions. This intermediate can readily react with other nucleophilic reagents to obtain C-3 substituted indole derivatives. In the last few years, a plethora of exciting synthetic applications of this substrate have been exploited. The stability of arylsulfonyl-containing substrates, mild reaction conditions, and the large variety of nucleophiles involved in these procedures are the key to their success in organic synthesis.
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Affiliation(s)
- Banni Preet Kaur
- Department of Chemistry, U.G.C. Centre of Advance Study-II, Guru Nanak Dev University Amritsar Punjab India
| | - Jasneet Kaur
- Post-Graduate Department of Chemistry, Khalsa College Amritsar Punjab India
| | - Swapandeep Singh Chimni
- Department of Chemistry, U.G.C. Centre of Advance Study-II, Guru Nanak Dev University Amritsar Punjab India
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10
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Abstract
This review summaries recent synthetic developments towards spirocyclic oxindoles and applications as valuable medicinal and synthetic targets.
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Affiliation(s)
- Alexander J. Boddy
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
| | - James A. Bull
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
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11
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Ge L, Zurro M, Harutyunyan SR. Copper-Catalyzed Addition of Grignard Reagents to in situ Generated Indole-Derived Vinylogous Imines. Chemistry 2020; 26:16277-16280. [PMID: 32960461 PMCID: PMC7918645 DOI: 10.1002/chem.202004232] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Indexed: 11/30/2022]
Abstract
Chiral indole derivatives are ubiquitous motifs in pharmaceuticals and alkaloids. Herein, the first protocol for catalytic asymmetric conjugate addition of Grignard reagents to various sulfonyl indoles, offering a straightforward approach for the synthesis of chiral 3‐sec‐alkyl‐substituted indoles in high yields and enantiomeric ratios is presented. This methodology makes use of a chiral catalyst based on copper phosphoramidite complexes and in situ formation of vinylogous imine intermediates.
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Affiliation(s)
- Luo Ge
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Mercedes Zurro
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Syuzanna R Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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12
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Zhu WJ, Gong JF, Song MP. Synthesis of Chiral Bis(3-indolyl)methanes Bearing a Trifluoromethylated All-Carbon Quaternary Stereocenter via Nickel-Catalyzed Asymmetric Friedel-Crafts Alkylation Reaction. J Org Chem 2020; 85:9525-9537. [PMID: 32628848 DOI: 10.1021/acs.joc.0c00336] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Bis(3-indolyl)methanes are well-known natural products with a broad range of important biological functions including cancer cell growth inhibition and antimicrobial activity. Incorporation of a trifluoromethyl group is known to have a profound effect on the parent compound's biological activities. Here, an efficient method for the synthesis of chiral trifluoromethylated bis(3-indolyl)methanes via a catalytic asymmetric Friedel-Crafts (F-C) alkylation reaction has been established. Both enantiomers of the catalysis products can be obtained by tuning the chiral substituents of the catalyst. With 5 mol % of the Ni(II)/(imidazoline-oxazoline) complex as the catalyst, the F-C reaction of indoles with β-CF3-β-(3-indolyl)nitroalkenes proceeded well to afford a series of chiral bis(3-indolyl)methanes bearing a trifluoromethylated all-carbon quaternary stereocenter in generally good yields with excellent enantioselectivities (up to 98% yield and 94% ee). Furthermore, by interchanging the indole moieties of the two reactants, indole vs β-CF3-β-(3-indolyl)nitroalkene in the F-C reaction, both enantiomers of a given trifluoromethylated bis(3-indolyl)methane were obtained with high enantioselectivities (89-94% ee) upon removal of the indole N-protecting group in the F-C products. The current work represents the first general catalytic enantioselective approach to the important class of trifluoromethylated bis(3-indolyl)methanes.
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Affiliation(s)
- Wen-Jing Zhu
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Jun-Fang Gong
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Mao-Ping Song
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, People's Republic of China
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13
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Sato R, Tosaka T, Masu H, Arai T. Catalytic Asymmetric Synthesis of Chiral Bis(indolyl)methanes Using a Ts-PyBidine-Nickel Complex. J Org Chem 2019; 84:14248-14257. [PMID: 31553607 DOI: 10.1021/acs.joc.9b02006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A chiral tosyl-substituted bis(imidazolidine)pyridine Ts-PyBidine-nickel complex was an efficient catalyst for Friedel-Crafts reaction of indoles with methylene indolinones to give bisindolylmethane compounds having differently oxidized indole units with high enantioselectivities. Alkylation of the products proceeded smoothly in a highly diastereoselective manner, providing an all-carbon quaternary carbon center without significant loss of enantiomeric excess.
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Affiliation(s)
- Ryo Sato
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Takuya Tosaka
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Hyuma Masu
- Center for Analytical Instrumentation , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
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14
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Odagi M, Nagasawa K. Recent Advances in Natural Products Synthesis Using Bifunctional Organocatalysts Bearing a Hydrogen‐Bonding Donor Moiety. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900459] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Minami Odagi
- Department of Biotechnology and Life ScienceTokyo University of Agriculture and Technology (TUAT) 2-24-16, Naka-cho Koganei city 184-8588 Tokyo Japan
| | - Kazuo Nagasawa
- Department of Biotechnology and Life ScienceTokyo University of Agriculture and Technology (TUAT) 2-24-16, Naka-cho Koganei city 184-8588 Tokyo Japan
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15
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Han JL, Liao YT, Chang CH. Asymmetric Organocatalytic Conjugate Addition of Electron-Rich Phenols and 1,3-Dicarbonyls to Arylsulfonyl Indoles in an Oil-Water Biphasic System. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900962] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jeng-Liang Han
- Department of Chemistry; National Chung Hsing University; 145 Xingda Rd., South Dist., Taichung City 402 Taiwan R.O.C
| | - Yu-Ting Liao
- Department of Chemistry; Chung Yuan Christian University; Taiwan R.O.C
| | - Chia-Hao Chang
- Department of Chemistry; Chung Yuan Christian University; Taiwan R.O.C
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16
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Hu H, Teng F, Liu J, Hu W, Luo S, Zhu Q. Enantioselective Synthesis of 2‐Oxindole Spirofused Lactones and Lactams by Heck/Carbonylative Cylization Sequences: Method Development and Applications. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904838] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Huaanzi Hu
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 China
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005 China
| | - Fan Teng
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 China
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005 China
| | - Jian Liu
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 China
| | - Weiming Hu
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 China
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005 China
| | - Shuang Luo
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 China
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005 China
| | - Qiang Zhu
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 China
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005 China
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17
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Hu H, Teng F, Liu J, Hu W, Luo S, Zhu Q. Enantioselective Synthesis of 2-Oxindole Spirofused Lactones and Lactams by Heck/Carbonylative Cylization Sequences: Method Development and Applications. Angew Chem Int Ed Engl 2019; 58:9225-9229. [PMID: 31074567 DOI: 10.1002/anie.201904838] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Indexed: 01/16/2023]
Abstract
An efficient one-pot assembly of all-carbon spiro-oxindole compounds from non-oxindole-based materials has been developed through a palladium-catalyzed asymmetric Heck/carbonylative lactonization and lactamization sequence. Diversified spirooxindole γ-and δ-lactones/lactams were accessed in high yields with good to excellent enantioselectivities (up to 99 % ee) under mild reaction conditions. The natural product coixspirolactam A was conveniently synthesized by applying the current methodology, and thus its absolute configuration was elucidated for the first time. Asymmetric synthesis of an effective CRTH2 receptor antagonist has also been demonstrated utilizing this method in the key step.
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Affiliation(s)
- Huaanzi Hu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510005, China
| | - Fan Teng
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510005, China
| | - Jian Liu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China
| | - Weiming Hu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510005, China
| | - Shuang Luo
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510005, China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510005, China
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18
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Gelis C, Levitre G, Merad J, Retailleau P, Neuville L, Masson G. Highly Diastereo- and Enantioselective Synthesis of Cyclohepta[b
]indoles by Chiral-Phosphoric-Acid-Catalyzed (4+3) Cycloaddition. Angew Chem Int Ed Engl 2018; 57:12121-12125. [DOI: 10.1002/anie.201807069] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Coralie Gelis
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Guillaume Levitre
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Jérémy Merad
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Luc Neuville
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
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19
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Gelis C, Levitre G, Merad J, Retailleau P, Neuville L, Masson G. Highly Diastereo- and Enantioselective Synthesis of Cyclohepta[b
]indoles by Chiral-Phosphoric-Acid-Catalyzed (4+3) Cycloaddition. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807069] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Coralie Gelis
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Guillaume Levitre
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Jérémy Merad
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Luc Neuville
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles CNRS; Univ. Paris-Sud; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
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20
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Bertuzzi G, Lenti L, Giorgiana Bisag D, Fochi M, Petrini M, Bernardi L. γ-Regioselective Functionalization of 3-Alkenylindolesvia1,6-Addition to Extended Alkylideneindolenine Intermediates. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701558] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Giulio Bertuzzi
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna; Alma Mater Studiorum - University of Bologna; V. Risorgimento 4 40136 Bologna Italy
| | - Lucia Lenti
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna; Alma Mater Studiorum - University of Bologna; V. Risorgimento 4 40136 Bologna Italy
- School of Science and Technology, Chemistry Division; Università di Camerino; V. S. Agostino 1 62032 Camerino Italy
| | - Denisa Giorgiana Bisag
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna; Alma Mater Studiorum - University of Bologna; V. Risorgimento 4 40136 Bologna Italy
| | - Mariafrancesca Fochi
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna; Alma Mater Studiorum - University of Bologna; V. Risorgimento 4 40136 Bologna Italy
| | - Marino Petrini
- School of Science and Technology, Chemistry Division; Università di Camerino; V. S. Agostino 1 62032 Camerino Italy
| | - Luca Bernardi
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna; Alma Mater Studiorum - University of Bologna; V. Risorgimento 4 40136 Bologna Italy
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21
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Abstract
This chapter covers the literature since the advent, in the 21st century, of total syntheses of alkaloids using enantio- or diastereoselective organocatalytic reactions to construct the alkaloid scaffolds. The details of these alkaloid syntheses are described separately for each basic skeleton, including indole, indoline, oxindole, and piperidine alkaloids.
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22
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Lin JB, Cheng XN, Tian XD, Xu GQ, Luo YC, Xu PF. A C1-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones. RSC Adv 2018; 8:15444-15447. [PMID: 35539478 PMCID: PMC9080099 DOI: 10.1039/c8ra02009d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/02/2018] [Indexed: 01/04/2023] Open
Abstract
A C1-symmetric N-heterocyclic carbene (NHC)-catalysed activation of isatin-derived enals under oxidative conditions was achieved. The in situ generated α,β-unsaturated acyl azolium species was efficiently trapped by 1,3-dicarbonyl compounds via a Michael addition/spiroannualtion cascade, delivering a series of synthetically important spirooxindole δ-lactones with up to 96% enantioselectivity. A NHC-catalysed spiroannulation of isatin-derived enals and 1,3-dicarbonyl compounds has been developed, enabling enantioselective synthesis of synthetically important spirooxindole δ-lactones.![]()
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Affiliation(s)
- Jun-Bing Lin
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xi-Na Cheng
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiao-Dong Tian
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Guo-Qiang Xu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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23
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Wang Y, Zheng C, You SL. Iridium-Catalyzed Asymmetric Allylic Dearomatization by a Desymmetrization Strategy. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708419] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ye Wang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin China
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24
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Wang Y, Zheng C, You SL. Iridium-Catalyzed Asymmetric Allylic Dearomatization by a Desymmetrization Strategy. Angew Chem Int Ed Engl 2017; 56:15093-15097. [PMID: 28980373 DOI: 10.1002/anie.201708419] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Indexed: 12/13/2022]
Abstract
A desymmetrization strategy was developed involving iridium-catalyzed allylic dearomatization of indoles. The six-membered-ring spiroindolenines contain three contiguous stereogenic centers, including an all-carbon quaternary center, and were obtained in up to 99 % yield with 99 % ee and >95:5 d.r. When treated with a catalytic amount of tosylic acid, six-membered spiroindolenine undergoes an unprecedented six-to-seven-membered ring expansion, affording the corresponding hexahydroazepino[4,5-b]indole.
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Affiliation(s)
- Ye Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China.,Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
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25
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Zhang W, Xu J, Cao J, Fang C, Zhu J, Lu T, Du D. N -heterocyclic carbene-mediated formal [3+3] annulation of isatin-derived α, β-unsaturated acids: Access to functionalized 3,4′-spirooxindole δ -lactones. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.04.055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Dalpozzo R. Recent Catalytic Asymmetric Syntheses of 3,3-Disubstituted Indolin-2-ones and 2,2-Disubstituted Indolin-3-ones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700361] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Renato Dalpozzo
- Dipartimento di Chimica e Tecnologie Chimiche; Università della Calabria; 87030 Arcavacata di Rende (Cs Italy
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27
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Li Y, Li J, Ding H, Li A. Recent advances on the total synthesis of alkaloids in mainland China. Natl Sci Rev 2017. [DOI: 10.1093/nsr/nwx050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
AbstractAlkaloids are a large family of natural products that mostly contain basic nitrogen atoms. Because of their intriguing structures and important functions, they have long been popular targets for synthetic organic chemists. China's chemists have made significant progress in the area of alkaloid synthesis over past decades. In this article, selected total syntheses of alkaloids from research groups in mainland China during the period 2011–16 are highlighted.
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Affiliation(s)
- Yong Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310028, China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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28
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Xing ZH, Zhang Y, Wang Y, Xu XP, Ji SJ. Construction of chiral 3,3-disubstituted oxindoles by a thiourea-catalyzed substitution of phenylsulfonyl with 2-naphthol. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Reddy BN, Ramana C. A concise approach for central core of trigolutes: Total synthesis of trigolute B and 3- epi -trigolute B and analogues. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.12.074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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30
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Organocatalytic Enantioselective Friedel-Crafts Reaction of Sesamol and Electron-rich Phenols with Alkylideneindolenine Intermediates Generated from Arylsulfonyl Indoles. ChemistrySelect 2016. [DOI: 10.1002/slct.201601425] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Zhou Q, Srinivas HD, Zhang S, Watson MP. Accessing Both Retention and Inversion Pathways in Stereospecific, Nickel-Catalyzed Miyaura Borylations of Allylic Pivalates. J Am Chem Soc 2016; 138:11989-11995. [PMID: 27589327 PMCID: PMC5023504 DOI: 10.1021/jacs.6b07396] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We have developed a stereospecific, nickel-catalyzed Miyaura borylation of allylic pivalates, which delivers highly enantioenriched α-stereogenic γ-aryl allylboronates with good yields and regioselectivities. Our complementary sets of conditions enable access to either enantiomer of allylboronate product from a single enantiomer of readily prepared allylic pivalate substrate. Excellent functional group tolerance, yields, regioselectivities, and stereochemical fidelities are observed. The stereochemical switch from stereoretention to stereoinversion largely depends upon solvent and can be explained by competitive pathways for the oxidative addition step. Our mechanistic investigations support a stereoretentive pathway stemming from a directed oxidative addition and a stereoinvertive pathway that is dominant when MeCN blocks coordination of the directing group by binding the nickel catalyst.
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Affiliation(s)
| | | | - Songnan Zhang
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Mary P. Watson
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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32
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Asymmetric construction of all-carbon quaternary stereocenters in the total synthesis of natural products. Sci China Chem 2016. [DOI: 10.1007/s11426-016-0055-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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33
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Zhao J, Guan S, Zhou X, Han W, Cui B, Chen Y. Bioreduction of the C C double bond with Pseudomonas monteilii ZMU-T17: one approach to 3-monosubstituted oxindoles. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Palmieri A, Petrini M. Sulfonyl Azoles in the Synthesis of 3-Functionalized Azole Derivatives. CHEM REC 2016; 16:1353-79. [PMID: 27147297 DOI: 10.1002/tcr.201500291] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Indexed: 12/22/2022]
Abstract
Sulfonyl indoles, as well as related azolyl derivatives, have been recently introduced in synthesis as stable precursors of reactive indolenine intermediates. This personal account reports on the discovery of sulfonyl azoles and their practical utilization in many synthetic processes for the preparation of functionalized 3-substituted indoles, indazoles, and pyrroles. The indolenine intermediates obtained by treatment of sulfonyl azoles with Brønsted bases or Lewis acids can be considered as vinylogous imino derivatives that can be made to react with different nucleophilic reagents. These include organometallic reagents, reducing agents, stabilized carbanions, and heteronucleophiles. The controlled and mild conditions for the generation of indolenines from sulfonyl azoles make these substrates particularly useful in asymmetric synthesis, exploiting organo- or metal-catalyzed processes. Although less exploited, sulfonyl indoles can also be involved in photochemical processes for the preparation of polycyclic derivatives.
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Affiliation(s)
- Alessandro Palmieri
- School of Science and Technology, Chemistry Division, Università di Camerino, via S. Agostino 1, 62032, Camerino, Italy
| | - Marino Petrini
- School of Science and Technology, Chemistry Division, Università di Camerino, via S. Agostino 1, 62032, Camerino, Italy
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