1
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Song X, Qin W, Wang X, Luo G, Ni Q. Bifunctional Squaramide-Catalyzed Asymmetric Cascade Reaction of Benzothiazoles with 2-Nitroallylic Acetates or Nitroenynes. Org Lett 2023; 25:9164-9169. [PMID: 38097282 DOI: 10.1021/acs.orglett.3c03692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
We describe here an organocatalytic asymmetric cascade formal [3 + 3] cycloaddition of benzothiazoles with 2-nitroallylic acetates and nitroenynes. This dearomative methodology provided a facile and efficient strategy for the construction of a broad range of valuable benzothiazolopyridines bearing two adjacent stereogenic centers in moderate to good yields with good to excellent stereocontrol.
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Affiliation(s)
- Xiaoxiao Song
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
| | - Wei Qin
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
| | - Xuyang Wang
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
| | - Gen Luo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Qijian Ni
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
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2
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Sivanandan ST, Nair DK, Namboothiri INN. Recent advances in the synthetic applications of Morita-Baylis-Hillman and Rauhut-Currier adducts of nitroalkenes. Org Biomol Chem 2023; 21:6243-6262. [PMID: 37486601 DOI: 10.1039/d3ob00853c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
The Morita-Baylis-Hillman (MBH) and Rauhut-Currier (RC) adducts of nitroalkenes are important synthetic intermediates in organic synthesis. This review discusses the applications of different MBH and RC adducts of nitroalkenes such as MBH alcohols, acetates, bromides and hydrazinonitroalkenes as well as ketoalkylnitroalkenes in the synthesis of complex molecules including carbocycles and heterocycles. It also covers the mechanistic aspects, including the key intermediates and the reaction pathways. Early reports on MBH and RC reactions of nitroalkenes and applications of the products were covered in previous reviews. The present review covers the reports that appeared in the timeline of 2015-2023.
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Affiliation(s)
- Sudheesh T Sivanandan
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
- Department of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Divya K Nair
- Department of Chemistry, Mercy College, Palakkad, Kerala 678 006, India
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3
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Reddy YP, Srinivasadesikan V, Balamurugan R, Lin MC, Anwar S. Synthesis of tetrahydrochromenes and dihydronaphthofurans via a cascade process of [3 + 3] and [3 + 2] annulation reactions: mechanistic insight for 6- endo-trig and 5- exo-trig cyclisation. RSC Adv 2023; 13:5796-5803. [PMID: 36816068 PMCID: PMC9932637 DOI: 10.1039/d2ra08163f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/03/2023] [Indexed: 02/18/2023] Open
Abstract
Substituted tetrahydrochromenes and dihydronaphthofurans are easily accessible by the treatment of β-tetralone with trans-β-nitro styrene derived Morita-Baylis-Hillman (MBH) acetates through a formal [3 + 3]/[3 + 2] annulation. The reaction proceeds through a cascade Michael/oxa-Michael pathway with moderate to good yields. A DFT study was carried out to account for the formation of the corresponding six and five-membered heterocycles via 6-endo-trig and 5-exo-trig cyclization.
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Affiliation(s)
- Yeruva Pavankumar Reddy
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University) Vadlamudi-522213 Guntur Andhra Pradesh India https://www.vignan.ac.in/bshanwar.php +91-8632344700
| | - V. Srinivasadesikan
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University)Vadlamudi-522213GunturAndhra PradeshIndiahttps://www.vignan.ac.in/bshanwar.php+91-8632344700
| | | | - M. C. Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung UniversityHsinchu 30010Taiwan
| | - Shaik Anwar
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University) Vadlamudi-522213 Guntur Andhra Pradesh India https://www.vignan.ac.in/bshanwar.php +91-8632344700
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4
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Zhao Q, Chen BH, Li HP, Yu TT, Peng C, He XH, Huang W. Highly diastereoselective [3+3] cycloaddition of indolin-3-ones and nitroallylic acetates: Efficient access to polysubstituted dihydropyrano[3,2-b]indoles. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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5
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Ahmad T, Khan S, Ullah N. Recent Advances in the Catalytic Asymmetric Friedel-Crafts Reactions of Indoles. ACS OMEGA 2022; 7:35446-35485. [PMID: 36249392 PMCID: PMC9558610 DOI: 10.1021/acsomega.2c05022] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Functionalized chiral indole derivatives are privileged and versatile organic frameworks encountered in numerous pharmaceutically active agents and biologically active natural products. The catalytic asymmetric Friedel-Crafts reaction of indoles, catalyzed by chiral metal complexes or chiral organocatalysts, is one of the most powerful and atom-economical approaches to access optically active indole derivatives. Consequently, a wide range of electrophilic partners including α,β-unsaturated ketones, esters, amides, imines, β,γ-unsaturated α-keto- and α-ketiminoesters, ketimines, nitroalkenes, and many others have been successfully employed to achieve a plethora of functionalized chiral indole moieties. In particular, strategies for C-H functionalization in the phenyl of indoles require incorporation of a directing or blocking group in the phenyl or azole ring of indole. The discovery of chiral catalysts which can control enantiodiscrimination has gained a great deal of attention in recent years. This review will provide an updated account on the application of the asymmetric Friedel-Crafts reaction of indoles in the synthesis of diverse chiral indole derivatives, covering the timeframe from 2011 to today.
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Affiliation(s)
- Tauqir Ahmad
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
| | - Sardaraz Khan
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
| | - Nisar Ullah
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
- The
Center for Refining & Advanced Chemicals, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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6
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Uchikura T, Aruga K, Suzuki R, Akiyama T. Enantioselective Friedel-Crafts Alkylation Reaction of Pyrroles with N-Unprotected Alkynyl Trifluoromethyl Ketimines. Org Lett 2022; 24:4699-4703. [PMID: 35728276 DOI: 10.1021/acs.orglett.2c01972] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Developed herein is an enantioselective Friedel-Crafts alkylation reaction of N-unprotected alkynyl trifluoromethyl ketimines with pyrroles catalyzed by chiral phosphoric acid to furnish chiral primary α-trifluoromethyl-α-(2-pyrrolyl)propargylamines with high enantioselectivity. Transformation of the alkynyl group of the adducts afforded optically active α-trifluoromethylated amines bearing various substituents such as alkyl, alkenyl, enyne, and triazole without loss of optical purity.
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Affiliation(s)
- Tatsuhiro Uchikura
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Kureha Aruga
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Riku Suzuki
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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7
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Huang W, Li G, He XH, Li HP, Zhao Q, Li DA, Zhu HP, Zhang YH, Zhan G. Design, synthesis, and biological evaluation of tetrahydro-αcarbolines as Akt1 inhibitors that inhibit colorectal cancer cells proliferation. ChemMedChem 2022; 17:e202200104. [PMID: 35355421 DOI: 10.1002/cmdc.202200104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/25/2022] [Indexed: 11/09/2022]
Abstract
A series of densely functionalized THαCs were designed and synthesized as Akt1 inhibitors. Organocatalytic [3+3] annulation between indolin-2-imines 1 and nitroallylic acetates 2 provided rapid access to this pharmacologically interesting framework. In vitro kinase inhibitory abilities and cytotoxicity assays revealed that compound 3af was the most potent Akt1 inhibitor, and mechanistic study indicated that compound 3af suppressed the proliferation of colorectal cancer cells via inducing apoptosis and autophagy. Molecular docking suggested that the indole fragment of 3af was inserted into the hydrophobic pocket of Akt1 protein, and the H-bond between 3af and residue Lys179 also contributed to the stable binding. This article provides an efficient strategy to design and synthesize biologically important compounds as novel Akt1 inhibitors.
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Affiliation(s)
- Wei Huang
- Chengdu University of Traditional Chinese Medicine, School of Pharmacy, 1166 Liu Tai Av., 610000, Chengdu, CHINA
| | - Guo Li
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - Xiang-Hong He
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - He-Ping Li
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - Qian Zhao
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, 610000, Chengdu, CHINA
| | - Dong-Ai Li
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - Hong-Ping Zhu
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - Yue-Hua Zhang
- Sichuan University, State Key Laboratory of Biotherapy and Department of Pharmacy, CHINA
| | - Gu Zhan
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
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8
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Nakashima K, Minai A, Okuaki Y, Matsushima Y, Hirashima SI, Miura T. Organocatalytic one-pot asymmetric synthesis of 6-trifluoromethyl-substituted 7,8-dihydrochromen-6-ol. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153733] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Pareek A, Sivanandan ST, Bhagat S, Namboothiri IN. [3+2]-annulation of oxindolinyl-malononitriles with Morita–Baylis–Hillman acetates of nitroalkenes for the regio- and diastereoselective synthesis of spirocyclopentane-indolinones. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Sivanandan ST, Chauhan D, Namboothiri I. One‐pot regio‐ and diastereoselective synthesis of tetrahydro‐α‐carbolines via cascade reactions of iminoindolines with Morita‐Baylis‐Hillman bromides of nitroalkenes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101426] [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]
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11
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Recent Advances in Selected Asymmetric Reactions Promoted by Chiral Catalysts: Cyclopropanations, Friedel–Crafts, Mannich, Michael and Other Zinc-Mediated Processes—An Update. Symmetry (Basel) 2021. [DOI: 10.3390/sym13101762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The main purpose of this review article is to present selected asymmetric synthesis reactions in which chemical and stereochemical outcomes are dependent on the use of an appropriate chiral catalyst. Optically pure or enantiomerically enriched products of such transformations may find further applications in various fields. Among an extremely wide variety of asymmetric reactions catalyzed by chiral systems, we are interested in: asymmetric cyclopropanation, Friedel–Crafts reaction, Mannich and Michael reaction, and other stereoselective processes conducted in the presence of zinc ions. This paper describes the achievements of the above-mentioned asymmetric transformations in the last three years. The choice of reactions is related to the research that has been carried out in our laboratory for many years.
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12
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Zhang Y, Liu J, Zhang X. Organocatalytic Enantioselective Michael‐Aldol[3+2] Annulation for the Synthesis of Nitro‐Methanobenzo[7] annulenes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100974] [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)
- Yang Zhang
- College of Materials and Chemistry&Chemical Engineering Chengdu University of Technology 1 East Third Road, Erxianqiao, Chenghua District, Chengdu City Sichuan Province Chengdu 610059 P.R. China
| | - Jin‐Yu Liu
- College of Materials and Chemistry&Chemical Engineering Chengdu University of Technology 1 East Third Road, Erxianqiao, Chenghua District, Chengdu City Sichuan Province Chengdu 610059 P.R. China
| | - Xiao‐Hai Zhang
- State Key Laboratory of Applied Organic Chemistry School of Chemistry and Chemical Engineering Lanzhou University 222# Tianshui South Road Lanzhou 730000 P.R. China
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13
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Das J, Das SK. Trifluoroethanol-promoted ring-opening cyclization of 4-(2-oxiranylmethoxy)indoles: access to 4,5-fused indoles. Org Biomol Chem 2021; 19:6761-6765. [PMID: 34286792 DOI: 10.1039/d1ob01030a] [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
Herein, we report that the trifluoroethanol-mediated ring-opening cyclization of readily accessible 4-(2-oxiranylmethoxy)indoles takes place in a diastereoselective and 6-endo fashion to generate pyrano[2,3-e]indol-3-ols in high yields. This regioselective cyclization at the indole C-5 position requires the presence of a π-activating aryl substituent on the reacting epoxide carbon atom, but remains uninfluenced by the electronic nature of the indole-N-substituent. Interestingly, blocking the C-5 position of the indole unit directs the reaction to generate oxepino[4,3,2-cd]indol-3-ols via 7-endo epoxide-arene cyclization.
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Affiliation(s)
- Jonali Das
- Department of Chemical Sciences, Tezpur University, Napaam, Tezpur, Assam, India-784028.
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14
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Montesinos-Magraner M, Lluna-Galán C, Cernicharo-Toledo F, Vila C, Blay G, Pedro JR. Enantioselective Friedel-Crafts reaction of hydroxyarenes with nitroenynes to access chiral heterocycles via sequential catalysis. Org Biomol Chem 2021; 19:6990-6994. [PMID: 34350922 DOI: 10.1039/d1ob01238j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Naphthols, hydroxyindoles and an activated phenol are reacted with differently substituted (E)-nitrobut-1-en-3-ynes using the commercially available Rawal's chiral squaramide. The corresponding β-nitroalkynes were obtained with good yields and excellent enantioselectivities. Moreover, dihydronaphthofurans can be accessed via silver catalysed cyclization in a tandem one-pot procedure, with high preservation of the optical purity.
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Affiliation(s)
- Marc Montesinos-Magraner
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain.
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15
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Ai Y, Li D, Li G, Li H, He X, Fu X, Wang Y, Zhan G, Han B. Asymmetric Synthesis of Spirocyclopentane Oxindoles
via
[2+3] Annulation with 2‐(2‐Oxoindolin‐3‐yl)malononitriles as 1,2‐Carbon Bisnucleophiles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100235] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yue‐Yan Ai
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
- Ministry of Education Key Laboratory of Standardization of Chinese Medicine Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
| | - Dong‐Ai Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
| | - Guo Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
| | - He‐Ping Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
| | - Xiang‐Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
| | - Xue‐Ju Fu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
| | - Yu‐Ting Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
| | - Gu Zhan
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
- Ministry of Education Key Laboratory of Standardization of Chinese Medicine Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
- Ministry of Education Key Laboratory of Standardization of Chinese Medicine Chengdu University of Traditional Chinese Medicine Chengdu 611137 People's Republic of China
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16
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Kostenko AA, Bykova KA, Kucherenko AS, Komogortsev AN, Lichitsky BV, Zlotin SG. 2-Nitroallyl carbonate-based green bifunctional reagents for catalytic asymmetric annulation reactions. Org Biomol Chem 2021; 19:1780-1786. [PMID: 33543186 DOI: 10.1039/d0ob02283g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
2-Nitroallylic carbonates, a new class of "green" 1,3-bielectrophilic reagents for organic synthesis and catalysis, have been prepared. The bifunctional tertiary amine-catalyzed asymmetric [3 + 3] annulations of cyclic enols with these reagents occur much faster than corresponding reactions with 2-nitroallylic esters and produce no acidic by-products poisoning the catalyst. Furthermore, 2-nitroallylic carbonates enable highly enantioselective one-pot synthesis of a variety of fused dihydropyrane derivatives from available precursors bearing pharmacophoric fragments.
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Affiliation(s)
- Alexey A Kostenko
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Kseniya A Bykova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Alexander S Kucherenko
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Andrey N Komogortsev
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Boris V Lichitsky
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Sergei G Zlotin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
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17
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Bhattacharjee P, Bora U. Organocatalytic dimensions to the C–H functionalization of the carbocyclic core in indoles: a review update. Org Chem Front 2021. [DOI: 10.1039/d0qo01466d] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A review highlighting important research findings in remote C–H activation processes using effectual organocatalytic perspectives. The challenging indole carbocyclic ring positions were successfully accessed with proper regio- and stereocontrols.
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Affiliation(s)
| | - Utpal Bora
- Department of Chemical Sciences
- Tezpur University
- Tezpur
- India
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18
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Cai L, Jia X, Zhao J. C7-Friedel–Crafts alkylation of 4-aminoindoles with para-quinone methide derivatives under catalyst-free conditions. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1751855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Lu Cai
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Xian Jia
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Junling Zhao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, P. R. China
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19
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Zhao Y, Cai L, Huang T, Meng S, Chan ASC, Zhao J. Solvent‐Mediated C3/C7 Regioselective Switch in Chiral Phosphoric Acid‐Catalyzed Enantioselective Friedel‐Crafts Alkylation of Indoles with α‐Ketiminoesters. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901380] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yunlong Zhao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Lu Cai
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Tongkun Huang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Shanshui Meng
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Albert S. C. Chan
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Junling Zhao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
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20
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Kumar VS, Gudise VB, Settipalli PC, Reddy EK, Firoj Basha S, Reddy YP, Srinivasadesikan V, Lee S, Anwar S. Understanding the Mechanism of S
N
2′
vs
. S
N
2 in Cascade Reaction of β‐Naphthol and Nitrostyrene Derived MBH Acetates. ChemistrySelect 2020. [DOI: 10.1002/slct.201904618] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Vadiga Shanthi Kumar
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Veera Babu Gudise
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Poorna Chandrasekhar Settipalli
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Eeda Koti Reddy
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Shaik Firoj Basha
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Yeruva Pavankumar Reddy
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - V. Srinivasadesikan
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Shyi‐Long Lee
- Department of Chemistry and BiochemistryNational Chung Cheng University Chia-Yi 621 Taiwan
| | - Shaik Anwar
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
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21
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Li J, Hu QL, Chen XP, Hou KQ, Chan AS, Xiong XF. Asymmetric synthesis of tetrahydropyran[3,2-c]quinolinones via an organocatalyzed formal [3 + 3] annulation of quinolinones and MBH 2-naphthoates of nitroolefin. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.08.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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22
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Basu P, Hazra C, Baiju TV, Namboothiri INN. Synthesis of tetrahydrothiopyrano[2,3-b]indoles via [3+3] annulation of nitroallylic acetates with indoline-2-thiones. NEW J CHEM 2020. [DOI: 10.1039/c9nj04754a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
[3+3] annulation of 1,3-binucleophilic indolin-2-thione with 1,3-bielectrophilic nitroallylic acetate via an SN2-reaction-6-endo-trig cyclization takes place with high regio- and stereoselectivity to afford tetrahydrothiopyranoindoles.
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Affiliation(s)
- Pallabita Basu
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Chiranjit Hazra
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Thekke V. Baiju
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
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23
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Duan K, Shi H, Wang LX, Li SS, Xu L, Xiao J. Hydride transfer enabled switchable dearomatization of indoles in the carbocyclic ring and the pyrrole ring. Org Chem Front 2020. [DOI: 10.1039/d0qo00658k] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hydride transfer enabled the first success of the regioselective dearomatization of indoles in the carbocyclic ring and the pyrrole ring, which was induced by ortho-quinone methides and vinylogous iminium intermediates, respectively.
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Affiliation(s)
- Kang Duan
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Hongjin Shi
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Lin-Xuan Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Jian Xiao
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
- School of Marine Science and Engineering
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24
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Yang XC, Liu JY, Liu Z, Hu XQ, Xu PF. Quaternary Carbon Center Forming [3 + 2] Cyclization Reaction by Adjusting the Substituents of Substrates. J Org Chem 2019; 84:13871-13880. [DOI: 10.1021/acs.joc.9b02041] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xie-Chao Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu 610051, P.R. China
| | - Zhen Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xiu-Qin Hu
- 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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25
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Lu H, Zhang HX, Tan CY, Liu JY, Wei H, Xu PF. One-Pot Asymmetric Synthesis of Spiropyrazolone-Linked Cyclopropanes and Benzofurans through a General Michael Addition/Chlorination/Nucleophilic Substitution Sequence. J Org Chem 2019; 84:10292-10305. [DOI: 10.1021/acs.joc.9b01454] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hong Lu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, National Demonstration Center for Experimental Chemistry Education (Northwest University), College of Chemistry & Materials Science, Northwest University, Xi’an 710127, China
| | - Huan-Xin Zhang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Chang-Yin Tan
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, National Demonstration Center for Experimental Chemistry Education (Northwest University), College of Chemistry & Materials Science, Northwest University, Xi’an 710127, China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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26
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Huang T, Zhao Y, Meng S, Chan ASC, Zhao J. C7‐Functionalization of Indoles via Organocatalytic Enantioselective Friedel‐Crafts Alkylation of 4‐Amino‐ indoles with 2‐Butene‐1,4‐diones and 3‐Aroylacrylates. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900377] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tongkun Huang
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Yunlong Zhao
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Shanshui Meng
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Albert S. C. Chan
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Junling Zhao
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
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27
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Liu JY, Yang XC, Liu Z, Luo YC, Lu H, Gu YC, Fang R, Xu PF. An Atropo-enantioselective Synthesis of Benzo-Linked Axially Chiral Indoles via Hydrogen-Bond Catalysis. Org Lett 2019; 21:5219-5224. [PMID: 31247740 DOI: 10.1021/acs.orglett.9b01828] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A variety of axially chiral biaryldiols were synthesized in good yields with excellent atropo-enantioselectivities through construction of axially chiral indoles catalyzed by asymmetric hydrogen-bond donors. In addition, the new axially chiral compounds were proved to be efficient and practical catalysts for asymmetric catalysis. The strategy not only provides a novel method to synthesize axially chiral compounds but also extends the scope of chiral catalysts.
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Affiliation(s)
- Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 . P. R. China
| | - Xie-Chao Yang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 . P. R. China
| | - Zhen Liu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 . P. R. China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 . P. R. China
| | - Hong Lu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science , Northwest University , Xi'an 710069 , P. R. China
| | - Yu-Cheng Gu
- Syngenta Jealott's Hill International Research Centre , Bracknell , Berkshire RG42 6EY , U.K
| | - Ran Fang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 . P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 . P. R. China
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28
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Cai L, Zhao Y, Huang T, Meng S, Jia X, Chan ASC, Zhao J. Chiral Phosphoric-Acid-Catalyzed Regioselective and Enantioselective C7-Friedel–Crafts Alkylation of 4-Aminoindoles with Trifluoromethyl Ketones. Org Lett 2019; 21:3538-3542. [DOI: 10.1021/acs.orglett.9b00821] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Lu Cai
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Yunlong Zhao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Tongkun Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Shanshui Meng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Xian Jia
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Albert S. C. Chan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Junling Zhao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
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29
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Heravi MM, Zadsirjan V, Heydari M, Masoumi B. Organocatalyzed Asymmetric Friedel‐Crafts Reactions: An Update. CHEM REC 2019. [DOI: 10.1002/tcr.201800190] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Majid M. Heravi
- Department of ChemistrySchool of ScienceAlzahra University POBox 1993891176, Vanak Tehran Iran Tel.: +98 21 88044051 fax: +98 21 88041344
| | - Vahideh Zadsirjan
- Department of ChemistrySchool of ScienceAlzahra University POBox 1993891176, Vanak Tehran Iran Tel.: +98 21 88044051 fax: +98 21 88041344
| | - Masumeh Heydari
- Department of ChemistrySchool of ScienceAlzahra University POBox 1993891176, Vanak Tehran Iran Tel.: +98 21 88044051 fax: +98 21 88041344
| | - Baharak Masoumi
- Department of ChemistrySchool of ScienceAlzahra University POBox 1993891176, Vanak Tehran Iran Tel.: +98 21 88044051 fax: +98 21 88041344
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30
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Ren XR, Lin JB, Hu XQ, Xu PF. Bifunctional Brønsted base catalyzed inverse-electron-demand aza-Diels–Alder reactions of saccharin-derived 1-azadienes with azlactones. Org Chem Front 2019. [DOI: 10.1039/c9qo00357f] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective inverse-electron-demand aza-Diels–Alder reaction of saccharin-derived 1-azadienes and azlactones was developed using a phenylalanine-derived bifunctional Brønsted base-squaramide catalyst.
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Affiliation(s)
- Xiao-Rui Ren
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Jun-Bing Lin
- Shaanxi Key Laboratory of Chemical Reaction Engineering
- College of Chemistry and Chemical Engineering
- Yan'an University
- Yan'an 716000
- China
| | - Xiu-Qin Hu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
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31
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Vila C, Tortosa A, Blay G, Muñoz MC, Pedro JR. Organocatalytic enantioselective functionalization of indoles in the carbocyclic ring with cyclic imines. NEW J CHEM 2019. [DOI: 10.1039/c8nj05577g] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic enantioselective functionalization in the carbocyclic ring of indoles with benzoxathiazine 2,2-dioxides is described using a quinine-derived bifunctional organocatalyst.
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Affiliation(s)
- Carlos Vila
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- València
- Spain
| | - Arturo Tortosa
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- València
- Spain
| | - Gonzalo Blay
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- València
- Spain
| | - M. Carmen Muñoz
- Departament de Física Aplicada
- Universitat Politècnica de València
- Camino de Vera s/n
- 46022 València
- Spain
| | - José R. Pedro
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- València
- Spain
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32
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Lu H, Tan CY, Zhang HX, Zhang JL, Liu JY, Li HY, Xu PF. Participation of β-Ketothioamides in N-Heterocyclic Carbene-Catalyzed [3 + 3] Spiroannulation: Asymmetric Synthesis of Functionalized Spiro-piperidinone Derivatives. J Org Chem 2018; 83:15245-15255. [DOI: 10.1021/acs.joc.8b02520] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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33
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Basu P, Sikdar R, Kumar T, Namboothiri INN. Synthesis of Functionalized Arenopyrans and Arenylsulfanes by Reacting Nitroallylic Acetates with Arenols and Arenethiols. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Pallabita Basu
- Department of Chemistry; Indian Institute of Technology Bombay; 400 076 Mumbai India
| | - Robi Sikdar
- Department of Chemistry; Indian Institute of Technology Bombay; 400 076 Mumbai India
| | - Tarun Kumar
- Department of Chemistry; Indian Institute of Technology Bombay; 400 076 Mumbai India
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34
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Kim YH, Jang S, Kim DY. Highly Diastereo- and Enantioselective Organocatalyzed Michael/Oxa-Michael Sequence: Asymmetric Synthesis of Pyranonaphthoquinone Derivatives. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11566] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yong Hwan Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 South Korea
| | - Subin Jang
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 South Korea
| | - Dae Young Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 South Korea
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