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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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2
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Mitrofanov AY, Murashkina AV, Lyssenko KA, Beletskaya IP. Switchable Selectivity in the Annulation of o-Trifluoroacetylanilines and Activated Terminal Alkynes Based on Transition Metal and Phosphine Catalysis. Chemistry 2023; 29:e202302357. [PMID: 37593935 DOI: 10.1002/chem.202302357] [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: 07/24/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 08/19/2023]
Abstract
In this work, we have developed selective methods for the synthesis of quinoline-2-carboxylates and quinoline-3-carboxylates as well as (indolin-2-ylidene)acetates through copper-, silver-, or phosphine-catalyzed reaction of propiolates with 2'-amino-2,2,2-trifluoroacetophenones. The approaches proposed ensure synthesis of substituted quinoline carboxylates and (indolin-2-ylidene)acetates in good yields. Introduction of alkynones into the reaction with 2'-amino-2,2,2-trifluoroacetophenones gives acyl substituted derivatives in good yields.
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Affiliation(s)
- Alexander Yu Mitrofanov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, GSP-1, Moscow, 119991, Russian Federation
| | - Arina V Murashkina
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, GSP-1, Moscow, 119991, Russian Federation
| | - Konstantin A Lyssenko
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, GSP-1, Moscow, 119991, Russian Federation
- G.V. Plekhanov Russian University of Economics, 36 Stremyanny Per., Moscow, 117997, Russian Federation
| | - Irina P Beletskaya
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, GSP-1, Moscow, 119991, Russian Federation
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3
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Nakano Y, Maddigan-Wyatt JT, Lupton DW. Enantioselective Catalysis by the Umpolung of Conjugate Acceptors Involving N-Heterocyclic Carbene or Organophosphine 1,4-Addition. Acc Chem Res 2023; 56:1190-1203. [PMID: 37093247 DOI: 10.1021/acs.accounts.3c00063] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
ConspectusConjugate acceptors are one of the most common electrophilic functional groups in organic synthesis. While useful in a diverse range of transformations, their applications are largely dominated by the reactions from which their name is derived (i.e., as an acceptor of nucleophiles in the conjugate position). In 2014, we commenced studies focused on their ability to undergo polarity inversion through the conjugate addition of Lewis base catalysts. The first step in this process provides an enolate, from which the well-developed Rauhut-Currier (RC) and Morita-Baylis-Hillman (MBH) reactions can occur; however, tautomerization to provide a species in which the β-carbon of the conjugate acceptor can now act as a donor is also possible. When we commenced studies on this topic, reaction designs with this type of species, particularly when accessed using N-heterocyclic carbenes (NHCs), had been reported on only a handful of occasions. Despite a lack of development, conceptually it was felt that reactions taking advantage of polarity switching by Lewis base conjugate addition have a number of desirable features. Perhaps the most significant is the potential to reimagine a ubiquitous functional group as an entirely new synthon, namely, a donor to electrophiles from the conjugate position.Our work has focused on catalysis with both simple conjugate acceptors and also those embedded within more complicated substrates; the latter has allowed a series of cycloisomerizations and annulation reactions to be achieved. In most cases, the reactions have been possible using enantioenriched chiral NHCs or organophosphines as the Lewis base catalysts thereby delivering enantioselective approaches to novel cyclic molecules. While related chemistry can be accessed with either family of catalyst, in all cases reactions have been designed to take advantage of one or the other. In addition, a fine balance exists between reactions that exploit the initially formed enolate and those that involve the polarity-inverted β-anion. In our studies, this balance is addressed through substrate design, although catalyst control may also be possible. We consider the chemistry discussed in this Account to be in its infancy. Significant challenges remain to be addressed before our broad aim of discovering a universal approach to the polarity inversion of all conjugate acceptors can be achieved. These challenges broadly relate to chemoselectivity with substrates bearing multiple electrophilic functionalities, reliance upon the use of conjugate acceptors, and catalyst efficiency. To address these challenges, advances in catalyst design and catalyst cooperativity are likely required.
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Affiliation(s)
- Yuji Nakano
- School of Chemistry, Monash University, Clayton 3800, Victoria, Australia
| | | | - David W Lupton
- School of Chemistry, Monash University, Clayton 3800, Victoria, Australia
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4
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Thopate SB, Phanindrudu M, Jadhav SB, Chegondi R. Site-selective and stereoselective transformations on p-quinols & p-quinamines. Chem Commun (Camb) 2023; 59:3795-3811. [PMID: 36880888 DOI: 10.1039/d3cc00509g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
The intermolecular transformation of simple substrates into highly functionalized scaffolds with multiple stereogenic centers is an attractive strategy in modern organic synthesis. Prochiral 2,5-cyclohexadienones, being stable and easily accessible, are privileged key building blocks for the synthesis of complex molecules and bioactive natural products. In particular, p-quinols and p-quinamines are important subclasses of cyclohexadienones, having both nucleophilic and electrophilic sites, and can undergo various intermolecular cascade annulations via formal cycloadditions and other transformations. This article highlights the recent developments of intermolecular transformations on p-quinols and p-quinamines along with plausible reaction mechanisms. We hope that this review will inspire the readers to explore the new potential applications of these unique prochiral molecules.
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Affiliation(s)
- Satish B Thopate
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India. /.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mandalaparthi Phanindrudu
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India. /
| | - Sandip B Jadhav
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India. /.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rambabu Chegondi
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India. /.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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5
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Basemann K, Riley KM, Becker JJ, Gagné MR. Iodenium or Phosphonium: The Ambi-Valent Character of Iodophosphonium Complexes. Inorg Chem 2022; 61:17550-17556. [DOI: 10.1021/acs.inorgchem.2c02543] [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]
Affiliation(s)
- Kevin Basemann
- Caudill Laboratories, Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina27599-3290, United States
| | - Kathleen M. Riley
- Caudill Laboratories, Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina27599-3290, United States
| | - Jennifer J. Becker
- U.S. Army Research Office, P.O. Box 12211, Research Triangle Park, North Carolina27709, United States
| | - Michel R. Gagné
- Caudill Laboratories, Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina27599-3290, United States
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6
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Hu KW, You X, Wen X, Yuan H, Xu QL, Lai Z. Synthesis of Functionalized Thiazolidin-2-imine and Oxazolidin-2-one Derivatives from p-Quinamines via [3 + 2] Annulation of Isothiocyanates and CO 2. J Org Chem 2022; 88:5052-5058. [PMID: 35880952 DOI: 10.1021/acs.joc.2c01031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient and environmentally friendly synthetic approach to prepare thiazolidine-2-imine and oxazolidine-2-one derivatives has been developed. Thiazolidine-2-imines are synthesized in good to excellent yields by [3 + 2] annulation of p-quinamines with isothiocyanates under catalyst- and solvent-free conditions. Oxazolidine-2-ones are produced in good to excellent yields via [3 + 2] annulation of p-quinamines with CO2 using triethylenediamine (DABCO) as an organocatalyst. Furthermore, this strategy can be performed on a gram scale and tolerate a wide range of functional groups.
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Affiliation(s)
- Kai-Wen Hu
- School of Life Sciences and Health Engineering, Jiangnan University,1800 Lihu Avenue, 214122, Wuxi, China.,Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Xiao You
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Xiaoan Wen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Haoliang Yuan
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Qing-Long Xu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Zengwei Lai
- School of Life Sciences and Health Engineering, Jiangnan University,1800 Lihu Avenue, 214122, Wuxi, China
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7
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Lu F, Chen Y, Song X, Yu C, Li T, Zhang K, Yao C. NHC-Catalyzed [2 + 4] Annulation of Alkynyl Ester with Chalcone. J Org Chem 2022; 87:6902-6909. [PMID: 35486449 DOI: 10.1021/acs.joc.2c00022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An NHC-catalyzed [2 + 4] cyclization of alkynyl ester with α,β-unsaturated ketone to form a pyran scaffold was developed successfully. The cheap and easily available starting materials, mild reaction conditions, moderate to excellent yields, and high atom economy make this strategy attractive for the syntheses of highly substituted 4H-pyran derivatives.
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Affiliation(s)
- Fangfang Lu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Yangxu Chen
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Xue Song
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Chenxia Yu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Tuanjie Li
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Kai Zhang
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Changsheng Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
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8
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Sako M, Kanomata K, Salem MSH, Furukawa T, Sasai H, Takizawa S. Metal-free C(aryl)–P bond cleavage: Experimental and computational studies of the Michael addition/aryl migration of triarylphosphines to alkenyl esters. Org Chem Front 2022. [DOI: 10.1039/d2qo00028h] [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
The nucleophilic addition and aryl migration of triarylphosphines to alkynyl esters in the presence of water results in the formation of 3-(diarylphosphoryl)-3-aryl propanoic acid derivatives through a metal-free C(aryl)–P bond...
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9
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Hu KW, You X, Wang JZ, Wen X, Sun H, Xu QL, Lai Z. Chiral Phosphoric Acid Catalyzed Asymmetric Desymmetrization of para-Quinamines with Isocyanates: Access to Functionalized Imidazolidin-2-one Derivatives. Org Lett 2021; 23:7873-7877. [PMID: 34581589 DOI: 10.1021/acs.orglett.1c02889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of enantioselective desymmetrization of para-quinamines with isocyanates catalyzed by chiral phosphoric acid is reported. The strategy provides concise access to functionalized imidazolidin-2-one derivatives in high yields and enantioselectivities under mild reaction conditions. Remarkably, this reaction could be performed on a gram scale using 5 mol % catalyst loading and the chiral imidazolidin-2-one derivatives could be easily transformed into valuable scaffolds without disturbing the enantiopurity, demonstrating the synthetic utility of this protocol.
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Affiliation(s)
- Kai-Wen Hu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Xiao You
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Jin-Zheng Wang
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Xiaoan Wen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Hongbin Sun
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Qing-Long Xu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Zengwei Lai
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
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10
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Liu D, Shi B, Jiang H, Cheng Y, Xiao WJ, Lu LQ. Synthesis of hydroindoles via desymmetric [3+2] cycloadditions of para-quinamines with photogenerated ketenes. Chem Commun (Camb) 2021; 57:8496-8499. [PMID: 34351325 DOI: 10.1039/d1cc03352b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A DBU-catalyzed desymmetric [3+2] cycloaddition between para-quinamines and photogenerated ketenes was developed for the first time. Under the irradiation of low-energy blue LEDs, a variety of hydroindoles bearing all-carbon quaternary centers were produced with good reaction efficiency and complete diastereoselectivity (34 examples, 45-99% yields and >95 : 5 dr). This protocol represents a new approach to synthetically significant hydroindoles, and features broad substrate scope, high functional group compatibility and mild reaction conditions.
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Affiliation(s)
- Dan Liu
- CCNU-uOttawa Joint Research Centre, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China.
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11
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Escolano M, Gaviña D, Torres J, Díaz‐Oltra S, Pozo C. Organocatalytic Enantioselective Intramolecular (Hetero)Michael Additions in Desymmetrization Processes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Marcos Escolano
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
| | - Daniel Gaviña
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
| | - Javier Torres
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
| | - Santiago Díaz‐Oltra
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
| | - Carlos Pozo
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
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12
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13
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Chen B, He CY, Chu WD, Liu QZ. Recent advances in the asymmetric transformations of achiral cyclohexadienones. Org Chem Front 2021. [DOI: 10.1039/d0qo01358g] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This review describes recent developments in the asymmetric transformations of achiral cyclohexadienones, including enantioselective desymmetrization of prochiral cyclohexadienones and kinetic resolution of racemic cyclohexadienones.
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Affiliation(s)
- Bo Chen
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- China
| | - Cheng-Yu He
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- China
| | - Wen-Dao Chu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- China
| | - Quan-Zhong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- China
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14
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Huang Y, Liao J, Wang W, Liu H, Guo H. Synthesis of heterocyclic compounds through nucleophilic phosphine catalysis. Chem Commun (Camb) 2020; 56:15235-15281. [PMID: 33320123 DOI: 10.1039/d0cc05699e] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Nucleophilic phosphine catalysis is a practical and powerful tool for the synthesis of various heterocyclic compounds with the advantages of environmentally friendly, metal-free, and mild reaction conditions. The present report summarizes the construction of four to eight-membered heterocyclic compounds containing nitrogen, oxygen and sulphur atoms through phosphine-catalyzed intramolecular annulations and intermolecular [2+2], [3+2], [4+1], [3+1+1], [5+1], [4+2], [2+2+2], [3+3], [4+3] and [3+2+3] annulations of electron-deficient alkenes, allenes, alkynes and Morita-Baylis-Hillman carbonates.
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Affiliation(s)
- Yifan Huang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
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15
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Zhang X, Cheng B, Li H, He Y, Xu W, Duan X, Sun H, Wang T, Zhai H. Synthesis of Hydrobenzoimidazoles from
para
‐Quinamines and 1,3,5‐Triazinanes via a Formal [3+2] Annulation Reaction. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xinping Zhang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Bin Cheng
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Hui Li
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Yixuan He
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Wei Xu
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
| | - Xiaoguang Duan
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Haiyan Sun
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
| | - Taimin Wang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
| | - Hongbin Zhai
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Chemical Oncogenomics Shenzhen Engineering Laboratory of Nano Drug Slow-Release Peking University Shenzhen Graduate School Shenzhen 518055 People's Republic of China
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16
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17
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Xu K, Ye J, Liu H, Shen J, Liu D, Zhang W. Pd‐Catalyzed Asymmetric Allylic Substitution Annulation Using Enolizable Ketimines as Nucleophiles: An Alternative Approach to Chiral Tetrahydroindoles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000151] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kai Xu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 People's Republic of China
| | - Jianxun Ye
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 People's Republic of China
| | - Hao Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 People's Republic of China
| | - Jiefeng Shen
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 People's Republic of China
| | - Delong Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 People's Republic of China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 People's Republic of China
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 People's Republic of China
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18
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Takizawa S. Organocatalytic Synthesis of Highly Functionalized Heterocycles by Enantioselective aza-Morita-Baylis-Hillman-Type Domino Reactions. Chem Pharm Bull (Tokyo) 2020; 68:299-315. [PMID: 32238648 DOI: 10.1248/cpb.c19-00900] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Organocatalytic enantioselective domino reactions are an extremely attractive methodology, as their use enables the construction of complex chiral skeletons from readily available starting materials in two or more steps by a single operation under mild reaction conditions. Thus, these reactions can save both the quantity of chemicals and length of time typically required for the isolation and/or purification of synthetic intermediates. Additionally, no metal contamination of the products occurs, given that organocatalysts include no expensive or toxic metals. The aza-Morita-Baylis-Hillman (aza-MBH) reaction is an atom-economical carbon-carbon bond-forming reaction between α,β-unsaturated carbonyl compounds and imines mediated by Lewis base (LB) catalysts, such as nucleophilic phosphines and amines. aza-MBH products are functionalized chiral β-amino acid derivatives that are highly valuable as pharmaceutical raw materials. Although various enantioselective aza-MBH processes have been investigated, very few studies of aza-MBH-type domino reactions have been reported due to the complexity of the aza-MBH process, which involves a Michael/Mannich/H-transfer/β-elimination sequence. Accordingly, in this review article, our recent efforts in the development of enantioselective domino reactions initiated by MBH processes are described. In the domino reactions, chiral organocatalysts bearing Brønsted acid (BA) and/or LB units impart synergistic activation to substrates, leading to the easy synthesis of highly functionalized heterocycles (some of which have tetrasubstituted and/or quaternary carbon stereocenters) in high yield and enantioselectivity.
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Affiliation(s)
- Shinobu Takizawa
- Department of Synthetic Organic Chemistry, Artificial Intelligence Research Center, The Institute of Scientific and Industrial Research, Osaka University
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19
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Al-Tel TH, Srinivasulu V, Ramanathan M, Soares NC, Sebastian A, Bolognesi ML, Abu-Yousef IA, Majdalawieh A. Stereocontrolled transformations of cyclohexadienone derivatives to access stereochemically rich and natural product-inspired architectures. Org Biomol Chem 2020; 18:8526-8571. [PMID: 33043327 DOI: 10.1039/d0ob01550d] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The last two decades or so have witnessed an upsurge in defining the art of designing complex natural products and nature-inspired molecules. Throughout these decades, fundamental insights into stereocontrolled, step-economic and atom-economical synthesis principles were achieved by the numerous synthetic accomplishments particularly in diversity-oriented synthesis (DOS). This has empowered the visualization of the third dimension in synthetic design and thus has resulted in a dramatic increase with today's diversity-oriented synthesis (DOS) at the forefront enabling access to diverse scaffolds with a high degree of stereochemical and skeletal complexity. To this end, a starting material-based approach is one of the powerful tools utilized in DOS that allows rapid access to molecular architectures with a high sp3 content. Skeletal and stereochemical diversity is often paramount for the selective modulation of the biological function of a complementary protein in the biological space. In this context, stereocontrolled transformation of cyclohexadienone scaffolds has positioned itself as a powerful platform for the rapid generation of stereochemically enriched and natural product-inspired compound collections. In this review, we cover multidirectional synthetic strategies that utilized cyclohexadienone derivatives as pluripotent building blocks en route for the construction of novel chemical space.
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Affiliation(s)
- Taleb H Al-Tel
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Vunnam Srinivasulu
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Mani Ramanathan
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Nelson C Soares
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Anusha Sebastian
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Maria L Bolognesi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum - Università di Bologna, Via Belmeloro, 6, 40126 Bologna, Italy
| | - Imad A Abu-Yousef
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Amin Majdalawieh
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
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20
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Cecchinelli FM, Celentano G, Puglisi A, Gaggero N. Stereoselective Michael additions on α-aminoacrylates as the key step to an l-Oic analogue bearing a quaternary stereocenter. Org Biomol Chem 2020; 18:671-674. [DOI: 10.1039/c9ob02084e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly stereoselective synthesis of an l-Oic-analogue bearing a tetrasubstituted sterocenter is reported.
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Affiliation(s)
- Federico Maria Cecchinelli
- Dipartimento di Scienze Farmaceutiche
- Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133-Milano
- Italy
| | - Giuseppe Celentano
- Dipartimento di Scienze Farmaceutiche
- Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133-Milano
- Italy
| | | | - Nicoletta Gaggero
- Dipartimento di Scienze Farmaceutiche
- Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133-Milano
- Italy
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21
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Kondo M, Wathsala HDP, Sako M, Hanatani Y, Ishikawa K, Hara S, Takaai T, Washio T, Takizawa S, Sasai H. Exploration of flow reaction conditions using machine-learning for enantioselective organocatalyzed Rauhut–Currier and [3+2] annulation sequence. Chem Commun (Camb) 2020; 56:1259-1262. [DOI: 10.1039/c9cc08526b] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A highly atom-economical enantioselective Rauhut–Currier and [3+2] annulation has been established by flow system and machine-learning-assisted exploration of suitable conditions.
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Affiliation(s)
- Masaru Kondo
- Department of Synthetic Organic Chemistry
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Osaka 567-0047
- Japan
| | - H. D. P. Wathsala
- Department of Synthetic Organic Chemistry
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Osaka 567-0047
- Japan
| | - Makoto Sako
- Department of Synthetic Organic Chemistry
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Osaka 567-0047
- Japan
| | - Yutaro Hanatani
- Department of Synthetic Organic Chemistry
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Osaka 567-0047
- Japan
| | | | - Satoshi Hara
- Department of Reasoning for Intelligence
- ISIR
- Osaka University
- Japan
| | - Takayuki Takaai
- Department of Reasoning for Intelligence
- ISIR
- Osaka University
- Japan
| | - Takashi Washio
- Department of Reasoning for Intelligence
- ISIR
- Osaka University
- Japan
- Artificial Intelligence Research Center
| | - Shinobu Takizawa
- Department of Synthetic Organic Chemistry
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Osaka 567-0047
- Japan
| | - Hiroaki Sasai
- Department of Synthetic Organic Chemistry
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Osaka 567-0047
- Japan
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22
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Wu D, Zhang X, Li Y, Ying S, Zhu L, Li Z, Yang G, Van der Eycken EV. Divergent Access to Imidazopyrazinones and Imidazodiazepinones by Regioswitchable Post-Ugi Heteroannulation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Danjun Wu
- College of Pharmaceutical Science; Zhejiang University of Technology; 18 Chaowang Road 310014 Hangzhou China
| | - Xueling Zhang
- College of Pharmaceutical Science; Zhejiang University of Technology; 18 Chaowang Road 310014 Hangzhou China
| | - Yi Li
- College of Pharmaceutical Science; Zhejiang University of Technology; 18 Chaowang Road 310014 Hangzhou China
| | - Sanjun Ying
- College of Pharmaceutical Science; Zhejiang University of Technology; 18 Chaowang Road 310014 Hangzhou China
| | - Lixi Zhu
- College of Pharmaceutical Science; Zhejiang University of Technology; 18 Chaowang Road 310014 Hangzhou China
| | - Zhenghua Li
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); Department of Chemistry; KU Leuven; Celestijnenlaan 200F 3001 Leuven Heverlee Belgium
| | - Gensheng Yang
- College of Pharmaceutical Science; Zhejiang University of Technology; 18 Chaowang Road 310014 Hangzhou China
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); Department of Chemistry; KU Leuven; Celestijnenlaan 200F 3001 Leuven Heverlee Belgium
- Peoples Friendship University of Russia (RUDN University); 117198 Moscow Russia
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23
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Jadhav SB, Chegondi R. Diastereoselective Desymmetrization of p-Quinamines through Regioselective Ring Opening of Epoxides and Aziridines. Org Lett 2019; 21:10115-10119. [DOI: 10.1021/acs.orglett.9b04110] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Sandip B. Jadhav
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rambabu Chegondi
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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24
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McLaughlin MF, Massolo E, Cope TA, Johnson JS. Phenolic Oxidation Using H 2O 2 via in Situ Generated para-Quinone Methides for the Preparation of para-Spiroepoxydienones. Org Lett 2019; 21:6504-6507. [PMID: 31361145 DOI: 10.1021/acs.orglett.9b02372] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Phenols are attractive starting materials for the preparation of highly substituted cyclohexane rings via dearomative processes. Herein we report an efficient preparation of dearomatized 1-oxaspiro[2.5]octa-4,7-dien-6-ones (para-spiroepoxydienones) via the nucleophilic epoxidation of in situ generated para-quinone methides from 4-(hydroxymethyl)phenols using aqueous H2O2. The developed protocol bypasses the need for stoichiometric bismuth reagents or diazomethane, which are frequently deployed for p-spiroepoxydienone preparation. The p-spiroepoxydienones are further elaborated in numerous downstream complexity-building transformations.
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Affiliation(s)
- Michael F McLaughlin
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
| | - Elisabetta Massolo
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
| | - Thomas A Cope
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
| | - Jeffrey S Johnson
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
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25
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Jin H, Lai J, Huang Y. Phosphine-Catalyzed Domino [3 + 3] Cyclization of para-Quinamines with Morita–Baylis–Hillman Carbonates: Access to Hydroquinoline Derivatives. Org Lett 2019; 21:2843-2846. [DOI: 10.1021/acs.orglett.9b00834] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hongxing Jin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jingxiong Lai
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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26
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Ranjan P, Ojeda GM, Sharma UK, Van der Eycken EV. Metal‐Free Dearomatization: Direct Access to Spiroindol(en)ines in Batch and Continuous‐Flow. Chemistry 2019; 25:2442-2446. [DOI: 10.1002/chem.201805945] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Prabhat Ranjan
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)Department of ChemistryUniversity of Leuven (KU Leuven) Celestijnenlaan 200F 3001 Leuven Belgium
| | - Gerardo M. Ojeda
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)Department of ChemistryUniversity of Leuven (KU Leuven) Celestijnenlaan 200F 3001 Leuven Belgium
- Center for Natural Products ResearchFaculty of ChemistryUniversity of Havana, ZapatayG 10400 Havana Cuba
| | - Upendra K. Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)Department of ChemistryUniversity of Leuven (KU Leuven) Celestijnenlaan 200F 3001 Leuven Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)Department of ChemistryUniversity of Leuven (KU Leuven) Celestijnenlaan 200F 3001 Leuven Belgium
- People's Friendship University of RussiaRUDN University) Miklukho -Maklaya street 6 117198 Moscow Russia
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27
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Cao B, Wei Y, Shi M. Mitsunobu-initiated cascade cyclization of p-quinamines and 2-furanylmethanols: highly regio- and diastereoselective synthesis of functionalized hydrobenzo[c,d]indoles. Org Biomol Chem 2019; 17:3737-3740. [DOI: 10.1039/c9ob00585d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Mitsunobu-initiated intermolecular cascade cyclization of p-quinamines and 2-furanylmethanol has been developed, giving hydrobenzo[c,d]indole derivatives in moderate to good yields with high regio- and diastereoselectivities.
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Affiliation(s)
- Bo Cao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
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28
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Zhu Y, Jin H, Huang Y. DABCO-mediated [3+3] annulation of para-quinamines: access to functionalized 1,2,4-triazinone derivatives. Chem Commun (Camb) 2019; 55:10135-10137. [DOI: 10.1039/c9cc05276c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A new [3+3]-annulation of p-quinamines and nitrile imines for affording 1,2,4-triazinone derivatives with excellent yields and excellent diastereoselectivity.
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Affiliation(s)
- Yannan Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Hongxing Jin
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
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29
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Yang WL, Sun ZT, Zhang J, Li Z, Deng WP. Enantioselective synthesis of 3-amino-hydrobenzofuran-2,5-diones via Cu(i)-catalyzed intramolecular conjugate addition of imino esters. Org Chem Front 2019. [DOI: 10.1039/c8qo01335g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The copper-catalyzed enantioselective intramolecular conjugate addition of imino esters for desymmetrization of cyclohexadienones was described, providing access to enantioenriched 3-amino-hydrobenzofuran-2,5-diones.
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Affiliation(s)
- Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhong-Tao Sun
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jian Zhang
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Wei-Ping Deng
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
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30
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Reddy TP, Krishna AV, Ramachary DB. Catalytic [3 + 3]-Cycloaddition for Regioselective Preparation of Tricyclic Oxadiazines. Org Lett 2018; 20:6979-6983. [DOI: 10.1021/acs.orglett.8b02719] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- T. Prabhakar Reddy
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India
| | - A. Vamshi Krishna
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India
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31
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Li K, Jin Z, Chan WL, Lu Y. Enantioselective Construction of Bicyclic Pyran and Hydrindane Scaffolds via Intramolecular Rauhut–Currier Reactions Catalyzed by Thiourea-Phosphines. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02706] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaizhi Li
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Zhichao Jin
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Wai-Lun Chan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- National University of Singapore (Suzhou) Research Institute, 377 Lin Quan Street, Suzhou Industrial Park, Suzhou, Jiangsu P. R. China, 215123
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32
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Cao B, Wei Y, Shi M. Palladium-catalyzed intramolecular transfer hydrogenation & cycloaddition of p-quinamine-tethered alkylidenecyclopropanes to synthesize perhydroindole scaffolds. Chem Commun (Camb) 2018; 54:14085-14088. [DOI: 10.1039/c8cc09041f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A facile Pd-catalyzed intramolecular transfer hydrogenation and cycloaddition of p-quinamine-tethered alkylidenecyclopropanes has been developed, giving rigid tricyclic perhydroindole skeletons in moderate to good yields.
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Affiliation(s)
- Bo Cao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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