1
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Mandal PK, Patel S, Katukojvala S. Enal-azomethine ylides: application in the synthesis of functionalized pyrroles. Org Biomol Chem 2024; 22:5734-5738. [PMID: 38953694 DOI: 10.1039/d4ob00859f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Rhodium-catalyzed [3 + 2] annulation of diazoenals and N-alkyl imines resulted in N-alkyl-pyrrole-3-carbaldehyde derivatives. The reaction involves thermal 6π-electrocyclization and aromatization of a new class of enal-azomethine ylides (EAYs). The EAYs derived from dihydroisoquinoline and 2H-azirine gave fused-pyrrole and pyridine derivatives, respectively. The synthetic importance of pyrrole products has been demonstrated by one-step synthesis of the biologically relevant pyrrolo[3,2-c]quinoline scaffold as well as pyrrolo[2,1-a]isoquinoline which is a core structure of lamellarin alkaloids.
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Affiliation(s)
- Pratap Kumar Mandal
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, 462066 India.
| | - Sandeep Patel
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, 462066 India.
| | - Sreenivas Katukojvala
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, 462066 India.
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2
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Hu H, Liu Y, Wang B, Fan S, Deng R, Pu X, Huang Y. Catalysts-Controlled Roles Exchange between 2,3-Diaryl-2 H-azirines and Acetone: Chemodivergent Synthesis of Pyrroles and 3-Oxazolines. J Org Chem 2024; 89:6064-6073. [PMID: 38604997 DOI: 10.1021/acs.joc.4c00012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
We report two practical and step-economical methodologies for the chemodivergent synthesis of tri-substituted pyrroles and 3-oxazolines from the domino reactions of 2H-azirines and acetone. For instance, acetone served as a nucleophile to react with 2H-azirines under the basic conditions to furnish pyrroles. Upon changing the catalyst to TfOH, acetone served as an electrophile to synthesize 3-oxazolines. Moreover, the products could be synthesized on a gram scale, and the possible catalytic cycles were proposed.
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Affiliation(s)
- Haipeng Hu
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014 China
| | - Yangu Liu
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014 China
| | - Beining Wang
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014 China
| | - Shangyi Fan
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014 China
| | - Rui Deng
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014 China
| | - Xiang Pu
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014 China
| | - Yu Huang
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014 China
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3
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Pramanik S, Hazra S, Chatterjee A, Saha J. Hydrogen bonding-promoted tunable approach for access to aza-bicyclo-[3.3.0]octanes and cyclopenta[ b] pyrroles. Chem Commun (Camb) 2024; 60:4922-4925. [PMID: 38629143 DOI: 10.1039/d4cc01065e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
A unified strategy is disclosed that builds on successfully engaging the aniline nitrogen of 1,3-amphoteric γ-aminocyclopentenone for a tandem annulation with electron-poor alkynes, solely assisted by the H-bonding network of HFIP. This metal-free mild strategy provides access to medicinally relevant aza-bicyclo-octanes en route to another important scaffold: cyclopenta[b]pyrrole.
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Affiliation(s)
- Sourav Pramanik
- Division of Molecular Synthesis and Drug Discovery, Centre of Biomedical Research (CBMR), Lucknow 226014, India
| | - Subhadeep Hazra
- Division of Molecular Synthesis and Drug Discovery, Centre of Biomedical Research (CBMR), Lucknow 226014, India
| | - Ayan Chatterjee
- Division of Molecular Synthesis and Drug Discovery, Centre of Biomedical Research (CBMR), Lucknow 226014, India
| | - Jaideep Saha
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Mohali 160062, India.
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4
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Peh G, Tay T, Tan LL, Tiong E, Bi J, Goh YL, Ye S, Lin F, Tan CJX, Tan YZ, Wong J, Zhao H, Wong FT, Ang EL, Lim YH. Site-selective chlorination of pyrrolic heterocycles by flavin dependent enzyme PrnC. Commun Chem 2024; 7:7. [PMID: 38182798 PMCID: PMC10770391 DOI: 10.1038/s42004-023-01083-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 12/06/2023] [Indexed: 01/07/2024] Open
Abstract
Halogenation of pyrrole requires strong electrophilic reagents and often leads to undesired polyhalogenated products. Biocatalytic halogenation is a highly attractive approach given its chemoselectivity and benign reaction conditions. While there are several reports of enzymatic phenol and indole halogenation in organic synthesis, corresponding reports on enzymatic pyrrole halogenation have been lacking. Here we describe the in vitro functional and structural characterization of PrnC, a flavin-dependent halogenase that can act on free-standing pyrroles. Computational modeling and site mutagenesis studies identified three key residues in the catalytic pocket. A moderate resolution map using single-particle cryogenic electron microscopy reveals PrnC to be a dimer. This native PrnC can halogenate a library of structurally diverse pyrrolic heterocycles in a site-selective manner and be applied in the chemoenzymatic synthesis of a chlorinated analog of the agrochemical fungicide Fludioxonil.
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Affiliation(s)
- GuangRong Peh
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Terence Tay
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Lee Ling Tan
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Elaine Tiong
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Jiawu Bi
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Yi Ling Goh
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Suming Ye
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Fu Lin
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Cheryl Jia Xin Tan
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Yong Zi Tan
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
- Disease Intervention Technology Laboratory (DITL), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Joel Wong
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Huimin Zhao
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
- Department of Chemical and Biomolecular Engineering, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Fong Tian Wong
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.
| | - Ee Lui Ang
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.
- Synthetic Biology Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore.
| | - Yee Hwee Lim
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.
- Synthetic Biology Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore.
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5
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Zhang TB, Wang F, Ouyang JY, Luo ZW, Qin JH, Li JH, Ouyang XH. Aryldiazonium-Salt-Triggered Carboxylative Azotization of Pyrroles or Indoles with Polyhalomethanes via Halogen-Atom Transfer (XAT). Org Lett 2024. [PMID: 38175821 DOI: 10.1021/acs.orglett.3c03701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A halogen-atom-transfer (XAT)-based method for carbonylazotization of pyrroles or indoles with aryldiazonium salts and polyhalomethanes via dual C(sp2)-H bond functionalization is described. Using aryldiazonium salts realizes carbonylation/azotization of pyrroles or indoles via polyhalomethyl-radical-mediated and electrophilic substitution, thus providing a green, efficient, and step-economy approach for synthesis of multifunctional pyrroles or indoles from the easily available substrates. Notably, this strategy relies on the use of aryldiazonium salts to extend the well-established iodine atom transfer to bromine or chlorine atom transfer.
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Affiliation(s)
- Tian-Bao Zhang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Fang Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jun-Yao Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Zhen-Wei Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jing-Hao Qin
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
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6
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Huang J, Wu Y, Hu Z, Han S, Rong L, Xie X, Chen W, Peng X. Mn(OAc) 2-promoted [3+2] cyclization of enaminone with isocyanoacetate: Rapid access to pyrrole-2-carboxylic ester derivatives with potent anticancer activity. Bioorg Chem 2023; 140:106748. [PMID: 37562314 DOI: 10.1016/j.bioorg.2023.106748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 07/15/2023] [Accepted: 07/20/2023] [Indexed: 08/12/2023]
Abstract
The practical and facile Mn(OAc)2-promoted [3+2] cycloaddition reaction of enaminones with isocyanoacetate was developed, that delivered a diversity of 3-aroyl pyrrole-2-carboxylic esters with broad substrates scope. The most of the newly synthesized compounds exhibit moderate antiproliferative activity against four cancer cells. Notably, compound 2n demonstrate the most potent activity with average IC50 values of 5.61 μM against four distinct cancer cell lines. Moreover, 2n exhibit favorable anti-migration activity and drug-like properties. The further investigation suggests that compound 2n possesses the ability to inhibit ERK5 activity and exhibits effective binding with the ERK5 protein, making it a promising candidate as a lead compound for a new class of ERK5 inhibitors discovery.
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Affiliation(s)
- Jiuzhong Huang
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Yi Wu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou 341000, PR China
| | - Zhihao Hu
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Shihong Han
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Lanlan Rong
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Xin Xie
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Weiming Chen
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China.
| | - Xiaopeng Peng
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China.
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7
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Sinha SK, Ghosh P, Jain S, Maiti S, Al-Thabati SA, Alshehri AA, Mokhtar M, Maiti D. Transition-metal catalyzed C-H activation as a means of synthesizing complex natural products. Chem Soc Rev 2023; 52:7461-7503. [PMID: 37811747 DOI: 10.1039/d3cs00282a] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Over the past few decades, the advent of C-H activation has led to a rethink among chemists about the synthetic strategies employed for multi-step transformations. Indeed, deploying innovative and masterful tricks against the numerous classical organic transformations has been the need of the hour. Despite this, the immense importance of C-H activation remains unfulfilled unless the methodology can be deployed for large-scale industrial processes and towards the concise, step-economic synthesis of prodigious natural products and pharmaceutical drugs. Lately, the growing potential of C-H activation methodology has indeed driven the pioneers of synthetic organic chemists into finding more efficient methods to accelerate the synthesis of such complex molecular scaffolds. This review aims to draw a general overview of the various C-H activation procedures that have been adopted for synthesizing these vast majority of structurally complicated natural products. Our objective lies in drawing a complete picture and taking the readers through the synthesis of a series of such complex organic compounds by simplified techniques, making it step-economic on a larger scale and thus instigating the readers to trigger the use of such methodology and uncover new, unique patterns for future synthesis of such natural products.
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Affiliation(s)
- Soumya Kumar Sinha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Pintu Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Shubhanshu Jain
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Siddhartha Maiti
- School of Biosciences, Engineering and Technology, VIT Bhopal University, Kothrikalan, Sehore, Madhya Pradesh - 466114, India
| | - Shaeel A Al-Thabati
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Abdulmohsen Ali Alshehri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Mohamed Mokhtar
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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8
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Zeng W, Li H, Wang D, Zhou L. Regioselective Synthesis of 3-Trifluoromethylpyrroles by [3 + 2] Cycloaddition of N-Acyl α-Amino Acids and 2-Bromo-3,3,3-trifluoropropene. J Org Chem 2023; 88:14088-14095. [PMID: 37698091 DOI: 10.1021/acs.joc.3c01611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
A mild and concise method for the synthesis of 3-trifluoromethylpyrroles via base-mediated [3 + 2] cycloaddition of N-acyl α-amino acids and 2-bromo-3,3,3-trifluoropropene is described. N-Acyl α-amino acids serve as 1,3-dipole precursors without additional activating agents directly. A high level of regioselectivity was observed, regardless of the electronic nature and size of the substituents on 1,3-dipoles.
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Affiliation(s)
- Weidi Zeng
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046 Xinjiang, P. R. China
| | - Hui Li
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046 Xinjiang, P. R. China
| | - Duozhi Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046 Xinjiang, P. R. China
| | - Lei Zhou
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046 Xinjiang, P. R. China
- Institute of Green Chemistry and Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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9
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Zhou X, Huang Q, Guo J, Dai L, Lu Y. Molecular Editing of Pyrroles via a Skeletal Recasting Strategy. ACS CENTRAL SCIENCE 2023; 9:1758-1767. [PMID: 37780359 PMCID: PMC10540293 DOI: 10.1021/acscentsci.3c00812] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Indexed: 10/03/2023]
Abstract
Heterocyclic scaffolds are commonly found in numerous biologically active molecules, therapeutic agents, and agrochemicals. To probe chemical space around heterocycles, many powerful molecular editing strategies have been devised. Versatile C-H functionalization strategies allow for peripheral modifications of heterocyclic motifs, often being specific and taking place at multiple sites. The past few years have seen the quick emergence of exciting "single-atom skeletal editing" strategies, through one-atom deletion or addition, enabling ring contraction/expansion and structural diversification, as well as scaffold hopping. The construction of heterocycles via deconstruction of simple heterocycles is unknown. Herein, we disclose a new molecular editing method which we name the skeletal recasting strategy. Specifically, by tapping on the 1,3-dipolar property of azoalkenes, we recast simple pyrroles to fully substituted pyrroles, through a simple phosphoric acid-promoted one-pot reaction consisting of dearomative deconstruction and rearomative reconstruction steps. The reaction allows for easy access to synthetically challenging tetra-substituted pyrroles which are otherwise difficult to synthesize. Furthermore, we construct N-N axial chirality on our pyrrole products, as well as accomplish a facile synthesis of the anticancer drug, Sutent. The potential application of this method to other heterocycles has also been demonstrated.
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Affiliation(s)
- Xueting Zhou
- Joint
School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, Fujian 350207, China
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Qingqin Huang
- Joint
School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, Fujian 350207, China
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Jiami Guo
- Joint
School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, Fujian 350207, China
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Lei Dai
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Yixin Lu
- Joint
School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, Fujian 350207, China
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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10
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Xu G, Li L, Xu B, Fang Z, Duan J, Guo K. Copper-catalyzed three-component annulation toward pyrroles via the cleavage of two C-C bonds in 1,3-dicarbonyls. Chem Commun (Camb) 2023; 59:10636-10639. [PMID: 37580978 DOI: 10.1039/d3cc02681g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
The first copper-catalyzed three-component annulation of α,β-unsaturated ketoximes, 1,3-dicarbonyls and paraformaldehyde has been documented. This novel strategy achieved the two C-C bond cleavage of 1,3-dicarbonyl compounds directly as a single-carbon synthon and provided a new and highly efficient method for the synthesis of 2,3-disubstituted pyrroles in moderate to good yields with broad functional group compatibility.
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Affiliation(s)
- Gaochen Xu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S, Nanjing, 211816, China.
| | - Luchao Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S, Nanjing, 211816, China.
| | - Binyan Xu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S, Nanjing, 211816, China.
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S, Nanjing, 211816, China.
| | - Jindian Duan
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S, Nanjing, 211816, China.
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S, Nanjing, 211816, China.
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11
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Takeda A, Oka M, Iida H. Atom-Economical Syntheses of Dihydropyrroles Using Flavin-Iodine-Catalyzed Aerobic Multistep and Multicomponent Reactions. J Org Chem 2023. [PMID: 37183405 DOI: 10.1021/acs.joc.3c00444] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Herein, we report facile, atom-economical syntheses of multisubstituted 2,3-dihydropyrroles using flavin-iodine-catalyzed aerobic oxidative multistep transformations of chalcones with β-enamine ketones or 1,3-dicarbonyl compounds and amines. Exploiting coupled flavin-iodine catalysis, the multistep reaction, including C-C and C-N bond formation, is promoted only by the consumption of O2 (1 atm), thus allowing aerobic oxidative synthesis that generates green H2O as the only waste.
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Affiliation(s)
- Aki Takeda
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Marina Oka
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Hiroki Iida
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
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12
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Morales-Manrique C, Baquero EA, Guevara-Pulido J. Recent Advances in the Synthesis of 3,4-Dihydropyran-2-Ones Organocatalyzed by N-Heterocyclic Carbenes. Molecules 2023; 28:molecules28093743. [PMID: 37175154 PMCID: PMC10179788 DOI: 10.3390/molecules28093743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/21/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
In recent years, N-heterocyclic carbenes (NHC) have gained recognition as versatile molecules capable of acting as organocatalysts in various reactions, particularly through the activation of aldehydes via Breslow-type adducts. This organocatalytic activation has enabled the production of numerous 3,4-dihydropyran-2-ones and related derivatives. In this review, we provide an overview of the production of 3,4-dihydropyran-2-ones and derivatives via organocatalytic processes involving NHCs over the past eight years. These processes involve the use of a diverse range of substrates, catalysts, and reaction conditions, which can be classified into [4+2]-and [3+3]-type cycloadditions, primarily aimed at synthesizing this skeleton due to its biological activity and multiple stereocenters. These processes are scaled up to the gram scale, and the resulting products are often directed towards epimerization and functionalization to produce more complex molecules with potential applications in the biological field. Finally, we provide a perspective and the future directions of this topic in organic synthesis.
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Affiliation(s)
- Camilo Morales-Manrique
- Estado Sólido y Catálisis Ambiental (ESCA), Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No. 45-03, Bogotá 111321, Colombia
- INQA, Química Farmacéutica, Facultad de Ciencias, Universidad El Bosque, Bogotá 11001, Colombia
| | - Edwin A Baquero
- Estado Sólido y Catálisis Ambiental (ESCA), Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No. 45-03, Bogotá 111321, Colombia
| | - James Guevara-Pulido
- INQA, Química Farmacéutica, Facultad de Ciencias, Universidad El Bosque, Bogotá 11001, Colombia
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13
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Zhou C, Zheng H, Chen Y, Mao G, Deng GJ. Modular Synthesis of Tetrasubstituted Pyrroles through a Four-Component Cyclization Strategy Using Ammonium Salt as the Nitrogen Source. J Org Chem 2023; 88:1533-1544. [PMID: 36655334 DOI: 10.1021/acs.joc.2c02556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A four-component synthesis of tetrasubstituted pyrroles was developed under metal-free conditions. The pyrrole ring was formed in one pot through [2 + 1 + 1 + 1] condensation using ammonium salt as the nitrogen source. In this strategy, 1,4-naphthoquinones and maleimides were used as the versatile C2 fragments to provide substituted benzo[f]isoindole-4,9-diones and pyrrolo[3,4-c]pyrrole-1,3-diones, respectively. This work is highlighted by using ammonium salt as the nitrogen source, readily available starting materials and multibond formation (two C-C and two C-N bonds) in a single operation.
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Affiliation(s)
- Chunlan Zhou
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Haolin Zheng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Ya Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, PR China
| | - Guojiang Mao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, PR China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, PR China
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14
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Kaur N, Grewal P, Bhardwaj P, Verma Y, Ahlawat N. Synthesis of higher-membered heterocycles. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2172350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Navjeet Kaur
- Division of Research and Development, Department of Chemistry, Lovely Professional University, Phagwara, India
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15
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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16
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Williams M, Boyer A. Modular Synthesis of Highly Substituted 3-Azapyrroles by Rh(II)-Catalyzed N-H Bond Insertion and Cyclodehydration. J Org Chem 2022; 87:16139-16156. [PMID: 35503987 PMCID: PMC9764362 DOI: 10.1021/acs.joc.2c00434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A modular synthesis of highly substituted 3-azapyrroles has been developed using a three-step sequence comprising copper-catalyzed alkyne-azide cycloaddition (CuAAC), N-H bond insertion, and cyclodehydration. 1-Sulfonyl-1,2,3-triazoles (1-STs) can be accessed from common alkyne and sulfonyl azide building blocks by CuAAC using CuTC. Rhodium(II)-acetate-promoted 1-ST denitrogenation results in highly electrophilic rhodium azavinyl carbenes that, here, underwent insertion into the N-H bond of secondary α-aminoketones to form 1,2-aminoalkenes. These products were cyclized and dehydrated using BF3·OEt2 into highly substituted 3-azapyrroles. The three steps (CuAAC, N-H bond insertion, and cyclodehydration) could be telescoped into a one-pot process. The method proved to be highly efficient and tolerated a wide range of substituents.
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17
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Xu H, Li MJ, Chen H, Huang FH, Zhu QY, Wang GW, Zhang Z. I 2/FeCl 3-Catalyzed Domino Reaction of Aurones with Enamino Esters for the Synthesis of Highly Functionalized Pyrroles. Org Lett 2022; 24:8406-8411. [DOI: 10.1021/acs.orglett.2c03537] [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)
- Hui Xu
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ming-Jun Li
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Hong Chen
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Fei-Hong Huang
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Qi-Yue Zhu
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Guan-Wu Wang
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ze Zhang
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
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18
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Chen Z, Li YF, Tan SZ, Ouyang Q, Chen ZC, Du W, Chen YC. Formal nucleophilic pyrrolylmethylation via palladium-based auto-tandem catalysis: switchable regiodivergent synthesis and remote chirality transfer. Chem Sci 2022; 13:12433-12439. [PMID: 36349271 PMCID: PMC9628985 DOI: 10.1039/d2sc05210e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 10/05/2022] [Indexed: 09/10/2023] Open
Abstract
Although nucleophilic benzylation-type reaction to introduce various aromatic systems into molecules has been widely explored, the related pyrrolylmethylation version remains to be disclosed. Reported herein is a palladium-catalysed multiple auto-tandem reaction between N-Ts propargylamines, allyl carbonates and aldimines in the presence of an acid, proceeding through sequential allylic amination, cycloisomerisation, vinylogous addition and aromatisation steps. A diversity of formal pyrrolylmethylated amine products were finally furnished efficiently. In addition, switchable regiodivergent 3-pyrrolylmethylation and 4-pyrrolylmethylation were realised by tuning catalytic conditions. Moreover, remote chirality transfer with readily available enantioenriched starting materials was well achieved with an achiral ligand, relying on diastereoselective generation of η2-Pd(0) complexes between Pd(0) and chiral 1,3-diene intermediates in the key vinylogous addition step. A few control experiments were conducted to elucidate the palladium-involved tandem reaction and regiodivergent synthesis.
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Affiliation(s)
- Zhi Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Yu-Fan Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Shun-Zhong Tan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Qin Ouyang
- College of Pharmacy, Third Military Medical University Shapingba Chongqing 400038 China
| | - Zhi-Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
- College of Pharmacy, Third Military Medical University Shapingba Chongqing 400038 China
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19
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Xuan J, Machicao PA, Haelsig KT, Maimone TJ. Chemical Investigations of Differentially Oxidized Polycylic Pyrroles from Bipolaris Fungi: Synthetic Entry Into the Bipolamine Alkaloids. Angew Chem Int Ed Engl 2022; 61:e202209457. [PMID: 35866193 PMCID: PMC9452474 DOI: 10.1002/anie.202209457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Indexed: 11/08/2022]
Abstract
indolizidine alkaloids of unusual biosynthetic origin have recently been characterized from several species of fungi within the Pleosporaceae family. Possessing distinct polycyclic architectures with two embedded electron-rich pyrroles as well as reported antibacterial activity against gram positive and negative pathogens, these natural products represent attractive targets for total synthesis. Herein we survey the differential functionalization of a chemically sensitive bispyrrole framework resulting in the preparation of multiple bipolamine alkaloids, work which sheds light on their innate chemical reactivity and potential biosynthetic relationships.
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Affiliation(s)
- Jun Xuan
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA 94720, USA
| | - Paulo A Machicao
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA 94720, USA
| | - Karl T Haelsig
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA 94720, USA
| | - Thomas J Maimone
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA 94720, USA
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20
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Tang YX, Zhuang SY, Liu JY, Chen XL, Zhou Y, Wu YD, Wu AX. I2-DMSO mediated N1/C5 difunctionalization of anthranils with aryl methyl ketones: A facile access to multicarbonyl compounds. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Choudhary S, Gayyur, Ghosh N. Cu(II)-catalyzed [4 + 1] and [4 + 3] annulation reactions: a modular approach to N-aryl/alkyl substituted 2,5-diamidopyrroles and diazepines. Org Biomol Chem 2022; 20:7017-7021. [PMID: 36001012 DOI: 10.1039/d2ob01458k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A one-pot copper-catalyzed [4 + 1] annulation reaction of primary amines with ynamide-derived buta-1,3-diynes for the synthesis of 2,5-diamido bearing N-aryl/alkyl pyrroles in up to excellent yields has been showcased. A broad range of primary amines having highly reactive functional groups are well tolerated. Notably, sterically demanding aniline and primary aliphatic amines are excellent amine sources. Furthermore, the current protocol may yield structurally unique diazepine derivatives. The scale-up reaction and fruitful chemical elaboration of pyrrole motifs highlight the importance of this reaction.
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Affiliation(s)
- Shivani Choudhary
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India. .,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Gayyur
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
| | - Nayan Ghosh
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India. .,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
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22
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Yamaguchi M, Fujiwara S, Mori Y, Konishi H, Manabe K. Synthesis of multisubstituted pyrroles by ligand-controlled site-selective arylation and their transformation into multiarylated pyrrolines and pyrrolidines. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Xuan J, Machicao P, Haelsig K, Maimone T. Chemical Investigations of Differentially Oxidized Polycyclic Pyrroles from Bipolaris Fungi: Synthetic Entry Into the Bipolamine Alkaloids. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Xuan
- University of California Berkeley College of Chemistry Chemistry UNITED STATES
| | - Paulo Machicao
- University of California Berkeley College of Chemistry Chemistry UNITED STATES
| | - Karl Haelsig
- University of California Berkeley College of Chemistry Chemistry UNITED STATES
| | - Thomas Maimone
- University of California Berkeley Department of Chemistry 826 Latimer Hall 94720 Berkeley UNITED STATES
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24
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Patel RK, Chauhan A, Jha P, Kant R, Kumar R. Catalytic Friedel-Crafts Alkylative Desymmetrization of Cyclohexa-2,5-dienones: Access to Linear and Bridged Polycyclic Pyrroles and 3-Arylpyrroles. Org Lett 2022; 24:5422-5427. [PMID: 35852460 DOI: 10.1021/acs.orglett.2c02135] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A catalytic [3 + 2]-cycloaddition/Friedel-Crafts alkylative desymmetrization strategy has been developed for the stereoselective construction of linear and bridged polycyclic pyrroles from alkynylcyclohexa-2,5-dienones. This strategy was further explored for the synthesis of 3-arylpyrroles under Brønsted acid catalysis. Reaction is highly chemo-, regio-, and stereoselective and is compatible with wide range of functionalized cyclohexa-2,5-dienones/pyrroles (>51 examples, ≤98% yields). Gram-scale synthesis and synthetic utility of the products have also been demonstrated to showcase the robustness of present method.
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Affiliation(s)
- Raj Kumar Patel
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
| | - Anil Chauhan
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad UP-201002, India
| | - Priyankar Jha
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ravindra Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad UP-201002, India
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25
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Abstract
Indolizidine alkaloids have been the target of chemical and biological studies for decades, most recently highlighted by the isolation of the curvulamine and bipolamine polypyrrole-containing subclass. Herein we report a stereoselective 15-step synthesis of bipolamine I, a distinct member of the broader family, and through this work develop an intermediate that will serve to access other polypyrrole natural products and key analogues going forward.
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Affiliation(s)
- Xiang Qiu
- Department of Chemistry and Comparative Medicine Institute, NC State University, Raleigh, North Carolina 27695, United States
| | - Joshua G Pierce
- Department of Chemistry and Comparative Medicine Institute, NC State University, Raleigh, North Carolina 27695, United States
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26
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Pawar AP, Yadav J, Dolas AJ, Iype E, Rangan K, Kumar I. Catalyst-free direct regiospecific multicomponent synthesis of C3-functionalized pyrroles. Org Biomol Chem 2022; 20:5747-5758. [PMID: 35775588 DOI: 10.1039/d2ob00961g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An operationally simple catalyst-free protocol for the direct regiospecific synthesis of β-(C3)-substituted pyrroles has been developed. The enamine intermediate, in situ generated from succinaldehyde and a primary amine, was trapped with activated carbonyls before the Paal-Knorr reaction in a direct multicomponent "just-mix" fashion to furnish pyrroles with overall good yields. Several C3-substituted N-alkyl/aryl/H pyrroles have been produced under open-flask conditions with high atom economy and avoiding protection-deprotection chemistry.
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Affiliation(s)
- Amol Prakash Pawar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Jyothi Yadav
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Atul Jankiram Dolas
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Eldhose Iype
- College of Engineering and Technology, American University of the Middle East, Kuwait
| | - Krishnan Rangan
- Department of Chemistry, BITS Pilani, Hyderabad Campus, Secunderabad, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
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27
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Development of a palladium-catalyzed decarboxylative arene cross-coupling of pyrrole derivatives in a flow reactor. J Flow Chem 2022. [DOI: 10.1007/s41981-022-00222-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Molteni L, Loro C, Christodoulou MS, Papis M, Foschi F, Beccalli EM, Broggini G. Ruthenium‐Catalyzed Decarboxylative Rearrangement of 4‐Alkenyl‐isoxazol‐5‐ones to Pyrrole Derivatives. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Camilla Loro
- University of Insubria: Universita degli Studi dell'Insubria DISAT ITALY
| | | | - Marta Papis
- University of Insubria Department of Science and High Technology: Universita degli Studi dell'Insubria Dipartimento di Scienza e Alta Tecnologia DISAT ITALY
| | - Francesca Foschi
- University of Insubria Department of Science and High Technology: Universita degli Studi dell'Insubria Dipartimento di Scienza e Alta Tecnologia DISAT ITALY
| | | | - Gianluigi Broggini
- Universita degli Studi dell'Insubria Dip. di Scienza e Alta Tecnologia Via Valleggio 11 22100 Como ITALY
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29
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Synthesis of pyrroles from propargylamines and their derivatives: an update (microreview). Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-022-03071-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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30
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Shivam, Tiwari G, Kumar M, Chauhan ANS, Erande RD. Recent advances in cascade reactions and their mechanistic insights: a concise strategy to synthesize complex natural products and organic scaffolds. Org Biomol Chem 2022; 20:3653-3674. [PMID: 35416224 DOI: 10.1039/d2ob00452f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The beauty of cascade reactions to bestow us with cumbersome organic scaffolds has made them a cutting-edge area of research. Although the planning of cascades may require intuition, their results can be highly impactful. The development of cascades to provide specific targeted molecules of an appropriate structural and stereochemical framework poses a significant challenge but can serve as one of the most impressive tools in organic synthesis. This review shares a broad interest in compiling cascade transformations towards the construction of polycyclic frameworks, induction of chirality/asymmetry in the protocol, etc. to solve diverse challenges in organic synthesis pursuits, as cascades enable the rapid and efficient construction of complex architectures from simple molecules. The studies highlighted herein manifest the utilization of a range of cascade reactions under various classifications for generating natural product skeletons such as palau'amine, benzosimuline, arcutinine, and others from simple building blocks, with emphasis on breakthroughs and potential for asymmetric synthesis. The exquisite synthetic designs of recently completed total synthesis of natural products with a focus on strategic concerns are also highlighted in this review.
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Affiliation(s)
- Shivam
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Geetika Tiwari
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | | | - Rohan D Erande
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
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31
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Heravi MM, Nazari A. Samarium(ii) iodide-mediated reactions applied to natural product total synthesis. RSC Adv 2022; 12:9944-9994. [PMID: 35424959 PMCID: PMC8965710 DOI: 10.1039/d1ra08163b] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 03/12/2022] [Indexed: 12/22/2022] Open
Abstract
Natural product synthesis remains a field in which new synthetic methods and reagents are continually being evaluated. Due to the demanding structures and complex functionality of many natural products, only powerful and selective methods and reagents will be highlighted in this proceeding. Since its introduction by Henri Kagan, samarium(ii) iodide (SmI2, Kagan's reagent) has found increasing use in chemical synthesis. Over the years, many reviews have been published on the application of SmI2 in numerous reductive coupling procedures as well as in natural product total synthesis. This review highlights recent advances in SmI2-mediated synthetic strategies, as applied in the total synthesis of natural products since 2004.
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Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Science, Alzahra University PO Box 1993891176 Vanak Tehran Iran +98 21 88041344 +98 21 88044051
| | - Azadeh Nazari
- Department of Chemistry, School of Science, Alzahra University PO Box 1993891176 Vanak Tehran Iran +98 21 88041344 +98 21 88044051
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32
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Li JQ, Chen XH, Cui HL. Modification of Pyrrolo[2,1- a]isoquinolines and Pyrrolo[1,2- a]quinolines with Ammonium Acetate and Dimethyl Sulfoxide via Methylthiomethylation. J Org Chem 2022; 87:2421-2434. [PMID: 35138091 DOI: 10.1021/acs.joc.1c02322] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient methylthiomethylation of pyrroloisoquinolines and pyrroloquinolines has been reached by the use of ammonium acetate and dimethyl sulfoxide. Methylthiomethylated heterocycles can be obtained in moderate to good yields in most cases, while trace amounts to good yields of methylene-bridged products can be observed. Choice of DMSO activator and its amount have a great influence on the chemoselectivity of this process. It is worth noting that this process can also be scalable. Another feature of this process is that the product can be transformed to sulfone and sulfoxide easily.
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Affiliation(s)
- Jia-Qin Li
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P.R. China
| | - Xiao-Hui Chen
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P.R. China.,Tonichem Pharmaceutical Technology Co., Ltd, Huizhou 516008, P.R. China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P.R. China
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33
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Fu L, Wan JP, Zhou L, Liu Y. Copper-catalyzed C-H/N-H annulation of enaminones and alkynyl esters for densely substituted pyrrole synthesis. Chem Commun (Camb) 2022; 58:1808-1811. [PMID: 35040446 DOI: 10.1039/d1cc06768k] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein, the copper-catalyzed annulation of enaminones with alkynyl esters for the facile synthesis of different pyrroles with a 2,3,4,5-tetrasubstituted structure has been developed. With Cu(OAc)2 as the only catalyst, the tunable synthesis of 2-vinyl and 2,3-dicarboxyl-functionalized pyrroles has been achieved by using terminal and internal alkynyl esters, respectively. The synthesis of 2-vinyl pyrroles represents the first example accessing 2-vinyl substituted pyrroles via direct cascade reactions involving vinylation and pyrrole ring formation.
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Affiliation(s)
- Leiqing Fu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China. .,College of Chemistry and Bio-Engineering, Yichun University, Yichun, Jiangxi 336000, P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Liyun Zhou
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
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34
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Baidya M, Maiti D, Roy L, De Sarkar S. Trifluoroethanol as a Unique Additive for the Chemoselective Electrooxidation of Enamines to Access Unsymmetrically Substituted NH‐Pyrroles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202111679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mrinmay Baidya
- Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur 741246 West Bengal India
| | - Debabrata Maiti
- Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur 741246 West Bengal India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai IOC Odisha Campus Bhubaneswar IIT Kharagpur Extension Centre Bhubaneswar 751013 India
| | - Suman De Sarkar
- Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur 741246 West Bengal India
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35
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36
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Shcherbakov NV, Titov GD, Chikunova EI, Filippov IP, Rostovskii NV, Kukushkin VY, Dubovtsev AY. Modular approach to non-aromatic and aromatic pyrroles through gold-catalyzed [3 + 2] cycloaddition of 2 H-azirines and ynamides. Org Chem Front 2022. [DOI: 10.1039/d2qo01105k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The developed modular approach to hard-to-reach non-aromatic 3H- and 2H-pyrroles is based on the integration of 2H-azirines and ynamides.
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Affiliation(s)
- Nikolay V. Shcherbakov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Gleb D. Titov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Elena I. Chikunova
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Ilya P. Filippov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Nikolai V. Rostovskii
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
- Laboratory of Crystal Engineering of Functional Materials, South Ural State University, 76, Lenin Av., 454080 Chelyabinsk, Russian Federation
| | - Alexey Yu. Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
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37
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Gao ZY, He Y, Li LY, Tian JS, Loh TP. BF 3-promoted reactions of α-amino acetals with alkynes to 2,5-disubstituted pyrroles. Org Chem Front 2022. [DOI: 10.1039/d2qo00405d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient BF3-promoted cyclization of α-amino acetals with alkynes for the assembly of substituted pyrroles has been developed. This cascade process can be easily achieved through a simple metal-free operation under mild conditions.
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Affiliation(s)
- Zhi-Yuan Gao
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Yu He
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Lan-Yang Li
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Teck-Peng Loh
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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38
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Li T, Chiou MF, Li Y, Ye C, Su M, Xue M, Yuan X, Wang C, Wan WM, Li D, Bao H. Synthesis of Unsymmetrically Tetrasubstituted Pyrroles and Studies of AIEE in Pyrrolo[1,2-a]pyrimidine Derivatives. Chem Sci 2022; 13:5667-5673. [PMID: 35694357 PMCID: PMC9116286 DOI: 10.1039/d2sc00837h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 04/13/2022] [Indexed: 11/21/2022] Open
Abstract
Pyrroles are among the most important heterocycles in pharmaceuticals and agrochemicals. Construction of pyrrole scaffolds with different substituents and free NH group however, is challenging. Herein, a metal-free method for...
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Affiliation(s)
- Taian Li
- College of Chemistry and Material Science, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University 1 Keji Road Fuzhou 350117 P. R. China
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Mong-Feng Chiou
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Yajun Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Changqing Ye
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Min Su
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Mengyu Xue
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Xiaobin Yuan
- College of Chemistry and Material Science, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University 1 Keji Road Fuzhou 350117 P. R. China
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Chuanchuan Wang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Wen-Ming Wan
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Daliang Li
- College of Chemistry and Material Science, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University 1 Keji Road Fuzhou 350117 P. R. China
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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39
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Vanaparthi S, Mamta, Yadav J, Pawar AP, Iype E, Rana S, Kumar I. Two-pot synthesis and photophysical studies of 1,6-disubstituted 5-aza-indoles from succinaldehyde and N-aryl propargylic-imines. Org Biomol Chem 2021; 19:10601-10610. [PMID: 34859806 DOI: 10.1039/d1ob01949j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A two-pot synthesis of 5-aza-indoles has been developed from aqueous succinaldehyde and N-aryl propargylic-imines. This overall protocol involves: (i) the metal-free [3 + 2] annulation of aqueous succinaldehyde and N-aryl propargylic-imines to access 2-alkynyl-pyrrole-3-aldehydes and (ii) Ag-catalyzed 6-endo-dig-cyclization to obtain substituted 5-aza-indoles in the second pot. The 5-aza-indoles showed engaging photophysical activities, and the practicality of this pot-economic gram-scale synthesis has been demonstrated.
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Affiliation(s)
- Satheeshvarma Vanaparthi
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Mamta
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Jyothi Yadav
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Amol Prakash Pawar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Eldhose Iype
- Department of Chemical Engineering, BITS Pilani, Dubai Campus, Dubai, United Arab Emirates
| | - Sravendra Rana
- University of Petroleum & Energy Studies (UPES), School of Engineering, Energy Acres, Bidholi, Dehradun, 248007, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
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40
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Olivier WJ, Smith JA, Bissember AC. Synthesis of Pyrrolidine- and γ-Lactam-Containing Natural Products and Related Compounds from Pyrrole Scaffolds. CHEM REC 2021; 22:e202100277. [PMID: 34862727 DOI: 10.1002/tcr.202100277] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/18/2021] [Indexed: 11/11/2022]
Abstract
Polycyclic alkaloid natural products featuring pyrrolidine and pyrrolidinone motifs remain enduring targets of total synthesis endeavors. Pyrrole and its derivatives have been exploited to access many such frameworks, including alkaloids belonging to the Aspidosperma, Stemona, and batzelladine families. In this article, a selection of exemplars that highlight the utility of pyrrole-based approaches to facilitate total syntheses of pyrrolidine- and pyrrolidinone-containing alkaloids and related molecules are showcased.
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Affiliation(s)
- Wesley J Olivier
- School of Natural Sciences-Chemistry, University of Tasmania Hobart, Tasmania, Australia
| | - Jason A Smith
- School of Natural Sciences-Chemistry, University of Tasmania Hobart, Tasmania, Australia
| | - Alex C Bissember
- School of Natural Sciences-Chemistry, University of Tasmania Hobart, Tasmania, Australia
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41
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Baidya M, Maiti D, Roy L, De Sarkar S. Trifluoroethanol as a Unique Additive for the Chemoselective Electrooxidation of Enamines to Access Unsymmetrically Substituted NH-Pyrroles. Angew Chem Int Ed Engl 2021; 61:e202111679. [PMID: 34851544 DOI: 10.1002/anie.202111679] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 11/15/2021] [Indexed: 01/31/2023]
Abstract
An electrochemical method for the synthesis of unsymmetrically substituted NH-pyrroles is described. The synthetic strategy comprises a challenging heterocoupling between two structurally diverse enamines via sequential chemoselective oxidation, addition, and cyclization processes. A series of aryl- and alkyl-substituted enamines were effectively cross-coupled from an equimolar mixture to synthesize various unsymmetrical pyrrole derivatives up to 84 % yield. The desired cross-coupling was achieved by tuning the oxidation potential of the enamines by utilizing a "magic effect" of the additive trifluoroethanol (TFE). Additionally, extensive computational studies reveal the unique role of TFE in promoting the heterocoupling process by regulating the activation energies of the reaction steps through H-bonding and C-H⋅⋅⋅π interactions. Importantly, the developed electrochemical protocol was found to be equally efficient for the homocoupling of enamines to form symmetric pyrroles up to 92 % yield.
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Affiliation(s)
- Mrinmay Baidya
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Debabrata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai, IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension Centre, Bhubaneswar, 751013, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
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42
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Shi G, Sun J, Chen Z. One‐Pot Electro‐Oxidative Annulation Reactions: Synthesis of Polysubstituted Pyrroles from Anilines and Alkynoates. ChemistrySelect 2021. [DOI: 10.1002/slct.202102593] [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)
- Guang Shi
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 P.R. China
| | - Jie Sun
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 P.R. China
| | - Zhiwei Chen
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 P.R. China
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43
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Boldrini C, Harutyunyan SR. Pd-catalyzed allylative dearomatisation using Grignard reagents. Chem Commun (Camb) 2021; 57:11807-11810. [PMID: 34693941 PMCID: PMC8577247 DOI: 10.1039/d1cc05609c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 10/15/2021] [Indexed: 12/20/2022]
Abstract
Pd-catalyzed allylative dearomatisation of naphthyl halides is shown to be feasible by employing Grignard reagents. The high reactivity of the nucleophile allows for fast reactions and low catalyst loading, while a plethora of successfully substituted compounds illustrate the broad scope. Five membered heteroaromatic compounds are also demonstrated to be reactive under similar conditions.
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Affiliation(s)
- Cosimo Boldrini
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands.
| | - Syuzanna R Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands.
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44
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Zhao Y, Guo X, Zhang R, Li S, Chen T, Sun X. CF 3CO 2H-Catalyzed Synthesis of 3-Alkynylpyrrole Derivatives and Their Controlled Reduction. J Org Chem 2021; 86:15568-15576. [PMID: 34648289 DOI: 10.1021/acs.joc.1c02078] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A transition-metal-free methodology employing nitroenynes and enaminones has been developed to access 3-alkynylpyrrole derivatives. This mild cyclization reaction might proceed through the nucleophilic addition, intramolecular cyclization, and the subsequent elimination processes. The protocol features a broad substrate scope, good selectivity, and functional group tolerance. Notably, the advantage of this method is also highlighted by the controlled reduction to generate alkenyl- or alkylpyrrole derivatives in good to excellent yields.
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Affiliation(s)
- Yulei Zhao
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xuqiang Guo
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Ruihua Zhang
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Shuai Li
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Tingting Chen
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xuejun Sun
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
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45
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Kim H, Xuan Z, Hyun Kim J. Tandem Synthesis of Tetrasubstituted NH Pyrroles from Simple Nitriles. Chem Asian J 2021; 16:3336-3340. [PMID: 34478215 DOI: 10.1002/asia.202100860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/25/2021] [Indexed: 12/22/2022]
Abstract
An efficient tandem route to obtain tetrasubstituted NH pyrroles in a one-pot manner has been developed, staring from simple nitriles, ethyl bromoacetates, and zinc. This reaction involves oxidative dimerization of the zinc bromide complex of β-enaminoesters using cerium ammonium nitrate (CAN) as an oxidant, affording 2,3,4,5-tetrasubstituted pyrroles in yields up to 91%.
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Affiliation(s)
- Hyeongsu Kim
- Department of Chemistry (BK 21 four), Research Institute of Natural Science (RINS), Gyeongsang National University, 52828, Jinju, Gyeongnam, Korea) E-mail
| | - Zi Xuan
- Department of Chemistry (BK 21 four), Research Institute of Natural Science (RINS), Gyeongsang National University, 52828, Jinju, Gyeongnam, Korea) E-mail
| | - Ju Hyun Kim
- Department of Chemistry (BK 21 four), Research Institute of Natural Science (RINS), Gyeongsang National University, 52828, Jinju, Gyeongnam, Korea) E-mail
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46
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Liu Y, Luo P, Fu Y, Hao T, Liu X, Ding Q, Peng Y. Recent advances in the tandem annulation of 1,3-enynes to functionalized pyridine and pyrrole derivatives. Beilstein J Org Chem 2021; 17:2462-2476. [PMID: 34630726 PMCID: PMC8474070 DOI: 10.3762/bjoc.17.163] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/11/2021] [Indexed: 12/11/2022] Open
Abstract
Great progress has been made in the tandem annulation of enynes in the past few years. This review only presents the corresponding reactions of 1,3-enyne structural motifs to provide the functionalized pyridine and pyrrole derivatives. The functionalization reactions cover iodination, bromination, trifluoromethylation, azidation, carbonylation, arylation, alkylation, selenylation, sulfenylation, amidation, esterification, and hydroxylation. We also briefly introduce the applications of the products and the reaction mechanisms for the synthesis of corresponding N-heterocycles.
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Affiliation(s)
- Yi Liu
- Key Laboratory for Green Chemistry of Jiangxi Province, Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Puying Luo
- Department of Gynaecology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, 92 Aiguo Road, Nanchang, Jiangxi, 330006, China
| | - Yang Fu
- Key Laboratory for Green Chemistry of Jiangxi Province, Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Tianxin Hao
- Key Laboratory for Green Chemistry of Jiangxi Province, Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Xuan Liu
- Key Laboratory for Green Chemistry of Jiangxi Province, Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Qiuping Ding
- Key Laboratory for Green Chemistry of Jiangxi Province, Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Yiyuan Peng
- Key Laboratory for Green Chemistry of Jiangxi Province, Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
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47
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Mari G, Corrieri M, De Crescentini L, Favi G, Santeusanio S, Mantellini F. FeCl
3
‐Catalyzed Formal [3+2] Cyclodimerization of 4‐Carbonyl‐1,2‐diaza‐1,3‐dienes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101046] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Giacomo Mari
- Department of Biomolecular Sciences Section of Chemistry and Pharmaceutical Technologies University of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino (PU) Italy
| | - Matteo Corrieri
- Department of Biomolecular Sciences Section of Chemistry and Pharmaceutical Technologies University of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino (PU) Italy
| | - Lucia De Crescentini
- Department of Biomolecular Sciences Section of Chemistry and Pharmaceutical Technologies University of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino (PU) Italy
| | - Gianfranco Favi
- Department of Biomolecular Sciences Section of Chemistry and Pharmaceutical Technologies University of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino (PU) Italy
| | - Stefania Santeusanio
- Department of Biomolecular Sciences Section of Chemistry and Pharmaceutical Technologies University of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino (PU) Italy
| | - Fabio Mantellini
- Department of Biomolecular Sciences Section of Chemistry and Pharmaceutical Technologies University of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino (PU) Italy
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48
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Behera BK, Sahu AK, Devi NR, Saikia AK. K 2S 2O 8-Mediated Synthesis of Highly Functionalized Pyrroles via Oxidative Self-Dimerization of N-Propargylamines. J Org Chem 2021; 86:12481-12493. [PMID: 34463507 DOI: 10.1021/acs.joc.1c00471] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient methodology has been developed for the synthesis of tetra- and pentasubstituted pyrroles via oxidative self-dimerization of N-propargylamines catalyzed by silver benzoate in the presence of K2S2O8 in good yields. The protocol provides a simple route for the synthesis of both tetra- and pentasubstituted pyrroles with two carbonyl groups in the side chain. The methodology can be extended toward the synthesis of pyrrolo[3,4-d]pyridazine.
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Affiliation(s)
- Bipin Kumar Behera
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Archana Kumari Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Ngangbam Renubala Devi
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anil K Saikia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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49
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Sar S, Das R, Barman D, Latua P, Guha S, Gremaud L, Sen S. A sustainable C-H functionalization of indoles, pyrroles and furans under a blue LED with iodonium ylides. Org Biomol Chem 2021; 19:7627-7632. [PMID: 34524326 DOI: 10.1039/d1ob01219c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyrrole and indole derivatives are functionalized via a green initiative with the dimethyl malonate derived phenyl iodonium ylide 4a in the presence of a blue LED via C-H functionalization of the respective heterocycles in methanol to generate the desired compounds 5-7 in moderate to good yields. Control experiments provide insight into the probable reaction mechanism. Finally, the strategy is successfully applied in the generation of azepino[4,5-b]indole 12a/b.
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Affiliation(s)
- Saibal Sar
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India.
| | - Ranajit Das
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India.
| | - Dhiraj Barman
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India.
| | - Pikaso Latua
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India.
| | - Souvik Guha
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India.
| | - Ludovic Gremaud
- School of Engineering and Architecture, Institute of Chemical Technology at University of Applied Sciences and Arts of Western Switzerland, CH-1700 Fribourg, Switzerland
| | - Subhabrata Sen
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Chithera, Dadri, Gautam Buddha Nagar, UP 201314, India.
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Azomethine ylide cycloaddition of 2-C-formyl glycals with α-amino acids for the synthesis of substituted pyrroles. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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