1
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Mishra DR, Panda BS, Nayak S, Panda J, Mohapatra S. Recent Advances in the Synthesis of 5‐Membered
N
‐Heterocycles via Rhodium Catalysed Cascade Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bhabani S. Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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2
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Shyam A, Pradhan AK, Mondal P. A Density Functional Theory Study on Et-BAC-Catalyzed 1,6-Conjugate Addition of p-Chlorobenzaldehyde to p-Quinone Methide for the Synthesis of α,α '-Diarylated Ketones. J Org Chem 2021; 86:9040-9054. [PMID: 34126745 DOI: 10.1021/acs.joc.1c01014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Umpolung-based organocatalysis has made a remarkable breakthrough in the field of synthetic organic chemistry. Among a plethora of umpolung catalysts, bis(amino)cyclopropenylidenes (BACs) have emerged as efficient organocatalysts with potential applications in synthesizing numerous essential organic moieties. In this study, a plausible mechanism for bis(diethylamino)cyclopropenylidene (Et-BAC)-catalyzed synthesis of α,α'-diarylated ketones has been established using the density functional theory (DFT) method. The proposed catalytic cycle of the studied reaction initiates with the nucleophilic interaction of Et-BAC with p-chlorobenzaldehyde to form a zwitterionic intermediate, which is then transformed to a reactive Breslow intermediate. The Breslow intermediate further undergoes a chemoselective and stereoselective 1,6-conjugate addition reaction with p-quinone methide to form a new C-C bond connection. Finally, the generated adduct undergoes a proton shift reaction with the assistance of both 8-diazabicyclo(5.4.0)undec-7-ene (DBU) and protonated DBU to yield the desired product. Conceptual DFT-derived reactivity indices and frontier molecular orbital theory analysis have been successfully utilized to unravel the role of Et-BAC in this studied reaction. In addition to Et-BAC, DBU and protonated DBU also play a very important role in lowering the activation energy barrier of proton transfer steps. This investigation will help in the rational designing of simple nonheterocyclic carbene-mediated novel organic transformations.
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Affiliation(s)
- Abhijit Shyam
- Department of Chemistry, Assam University, Silchar 788011, Assam, India
| | - Amit K Pradhan
- Department of Chemistry, Assam University, Silchar 788011, Assam, India
| | - Paritosh Mondal
- Department of Chemistry, Assam University, Silchar 788011, Assam, India
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3
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Li Y, Li Z, Zhang Z. A computational study on NHC-Catalyzed [3+4] annulation between isatin-derived enal and aurone-derived azadiene: Insights into mechanism and stereoselectivity. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Zhou SJ, Sun M, Wang JY, Yu XY, Lu H, Zhang YC, Shi F. Metal-Catalyzed Regiospecific (4+3) Cyclization of 2-Indolylmethanols with ortho
-Quinone Methides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000693] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Si-Jia Zhou
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou China
| | - Meng Sun
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou China
| | - Jing-Yi Wang
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou China
| | - Xian-Yang Yu
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou China
| | - Han Lu
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou China
| | - Yu-Chen Zhang
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou China
| | - Feng Shi
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou China
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5
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Suneja A, Loui HJ, Schneider C. Cooperative Catalysis for the Highly Diastereo- and Enantioselective [4+3]-Cycloannulation of ortho-Quinone Methides and Carbonyl Ylides. Angew Chem Int Ed Engl 2020; 59:5536-5540. [PMID: 31895488 PMCID: PMC7155103 DOI: 10.1002/anie.201913603] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 12/12/2019] [Indexed: 11/08/2022]
Abstract
We describe herein a highly diastereo- and enantioselective [4+3]-cycloannulation of ortho-quinone methides and carbonyl ylides to furnish functionalized oxa-bridged dibenzooxacines with excellent yields and stereoselectivity in a single synthetic step. The combination of rhodium and chiral phosphoric acid catalysis working in concert to generate both transient intermediates in situ provides direct access to complex bicyclic products with two quaternary and one tertiary stereogenic centers. The products may be further functionalized into valuable and enantiomerically highly enriched building blocks.
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Affiliation(s)
- Arun Suneja
- Institut für Organische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
| | - Henning Jakob Loui
- Institut für Organische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
| | - Christoph Schneider
- Institut für Organische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
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6
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An X, Du J, Jia Z, Zhang Q, Yu K, Zhang Y, Zhao X, Fang R, Fan C. Asymmetric Catalytic [4+5] Annulation of
ortho
‐Quinone Methides with Vinylethylene Carbonates and its Extension to Stereoselective Tandem Rearrangement. Chemistry 2020; 26:3803-3809. [DOI: 10.1002/chem.201904903] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Xian‐Tao An
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ji‐Yuan Du
- College of Chemistry and Chemical EngineeringLiaocheng University 1 Hunan Road Liaocheng 252059 China
| | - Zhi‐Long Jia
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Qing Zhang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ke‐Yin Yu
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Yi‐Zhou Zhang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Xian‐He Zhao
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ran Fang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Chun‐An Fan
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
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7
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Suneja A, Loui HJ, Schneider C. Kooperative Katalyse für die diastereo‐ und enantioselektive [4+3]‐Cycloanellierung von
ortho
‐Chinonmethiden und Carbonylyliden. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913603] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Arun Suneja
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Deutschland
| | - Henning Jakob Loui
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Deutschland
| | - Christoph Schneider
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Deutschland
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8
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Zhu X, Wang Z, Hou B, Zhang H, Deng C, Ye L. Zinc‐Catalyzed Asymmetric Formal [4+3] Annulation of Isoxazoles with Enynol Ethers by 6π Electrocyclization: Stereoselective Access to 2
H
‐Azepines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912534] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xin‐Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Ze‐Shu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Bo‐Shang Hou
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Hao‐Wen Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 China
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
- State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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9
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Zhu XQ, Wang ZS, Hou BS, Zhang HW, Deng C, Ye LW. Zinc-Catalyzed Asymmetric Formal [4+3] Annulation of Isoxazoles with Enynol Ethers by 6π Electrocyclization: Stereoselective Access to 2H-Azepines. Angew Chem Int Ed Engl 2019; 59:1666-1673. [PMID: 31724314 DOI: 10.1002/anie.201912534] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/31/2019] [Indexed: 12/17/2022]
Abstract
6π electrocyclization has attracted interest in organic synthesis because of its high stereospecificity and atom economy in the construction of versatile 5-7-membered cycles. However, examples of asymmetric 6π electrocyclization are quite scarce, and have to rely on the use of chiral organocatalysts, and been limited to pentadienyl-anion- and triene-type 6π electrocyclizations. Described herein is a zinc-catalyzed formal [4+3] annulation of isoxazoles with 3-en-1-ynol ethers via 6π electrocyclization, leading to the site-selective synthesis of functionalized 2H-azepines and 4H-azepines in good to excellent yields with broad substrate scope. Moreover, this strategy has also been used to produce chiral 2H-azepines with high enantioselectivities (up to 97:3 e.r.). This protocol not only is the first asymmetric heptatrienyl-cation-type 6π electrocyclization, but also is the first asymmetric reaction of isoxazoles with alkynes and the first asymmetric catalysis based on ynol ethers.
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Affiliation(s)
- Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Ze-Shu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Bo-Shang Hou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Hao-Wen Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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10
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Luo G, Huang Z, Zhuo S, Mou C, Wu J, Jin Z, Chi YR. Access to Cyclic β‐Amino Acids by Amine‐Catalyzed Enantioselective Addition of the γ‐Carbon Atoms of α,β‐Unsaturated Imines to Enals. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guoyong Luo
- School of PharmacyGuizhou University of Traditional Chinese Medicine Huaxi District Guiyang 550025 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Zhijian Huang
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Shitian Zhuo
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Chengli Mou
- School of PharmacyGuizhou University of Traditional Chinese Medicine Huaxi District Guiyang 550025 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Jian Wu
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
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11
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Luo G, Huang Z, Zhuo S, Mou C, Wu J, Jin Z, Chi YR. Access to Cyclic β‐Amino Acids by Amine‐Catalyzed Enantioselective Addition of the γ‐Carbon Atoms of α,β‐Unsaturated Imines to Enals. Angew Chem Int Ed Engl 2019; 58:17189-17193. [DOI: 10.1002/anie.201908896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/08/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Guoyong Luo
- School of PharmacyGuizhou University of Traditional Chinese Medicine Huaxi District Guiyang 550025 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Zhijian Huang
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Shitian Zhuo
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Chengli Mou
- School of PharmacyGuizhou University of Traditional Chinese Medicine Huaxi District Guiyang 550025 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Jian Wu
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
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12
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Trost BM, Zuo Z. Highly Regio‐, Diastereo‐, and Enantioselective Synthesis of Tetrahydroazepines and Benzo[
b
]oxepines through Palladium‐Catalyzed [4+3] Cycloaddition Reactions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911537] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | - Zhijun Zuo
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
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13
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Trost BM, Zuo Z. Highly Regio‐, Diastereo‐, and Enantioselective Synthesis of Tetrahydroazepines and Benzo[
b
]oxepines through Palladium‐Catalyzed [4+3] Cycloaddition Reactions. Angew Chem Int Ed Engl 2019; 59:1243-1247. [DOI: 10.1002/anie.201911537] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Indexed: 01/20/2023]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | - Zhijun Zuo
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
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14
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Liu B, Luo G, Wang H, Hao L, Yang S, Jin Z, Chi YR. Carbene‐Catalyzed Direct Functionalization of the β‐sp
3
‐Carbon Atoms of α‐Chloroaldehydes. Chemistry 2019; 25:12719-12723. [DOI: 10.1002/chem.201903592] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Bin Liu
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 P. R. China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Guoyong Luo
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 P. R. China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Hongling Wang
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 P. R. China
| | - Lin Hao
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Song Yang
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 P. R. China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 P. R. China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 P. R. China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
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15
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Liu D, Hu Z, Zhang Y, Gong M, Fu Z, Huang W. Access to Enantioenriched Spiro-ϵ-Lactam Oxindoles by an N-Heterocyclic Carbene-Catalyzed [4+3] Annulation of Flexible Oxotryptamines with Enals. Chemistry 2019; 25:11223-11227. [PMID: 31298766 DOI: 10.1002/chem.201903144] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Indexed: 01/06/2023]
Abstract
Oxotryptamines were firstly used as flexible four-atom synthons in an NHC-catalyzed formal [4+3] annulation, providing a novel enantioselective method to access structurally diverse spiro-ϵ-lactam oxindoles with excellent enantioselectivities. This metal-free reaction features a broad substrate scope, excellent functional-group tolerance and proceeds under mild reaction conditions. Importantly, enantiopure privileged hexahydropyrroloindoles could be easily constructed by a one-pot process from the resulting spiro-ϵ-lactam oxindoles.
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Affiliation(s)
- Dehai Liu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Zhouli Hu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Yuxia Zhang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Minghua Gong
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Zhenqian Fu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China.,Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China.,Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
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16
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Sun M, Ma C, Zhou S, Lou S, Xiao J, Jiao Y, Shi F. Catalytic Asymmetric (4+3) Cyclizations of In Situ Generated
ortho
‐Quinone Methides with 2‐Indolylmethanols. Angew Chem Int Ed Engl 2019; 58:8703-8708. [DOI: 10.1002/anie.201901955] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/03/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Meng Sun
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
| | - Chun Ma
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
| | - Si‐Jia Zhou
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
| | - Sai‐Fan Lou
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
| | - Jian Xiao
- College of Chemistry and Pharmaceutical SciencesQingdao Agricultural University Qingdao 266109 P. R. China
| | - Yinchun Jiao
- School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Feng Shi
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
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17
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Wang JR, Jiang XL, Hang QQ, Zhang S, Mei GJ, Shi F. Catalytic Asymmetric Conjugate Addition of Indoles to para-Quinone Methide Derivatives. J Org Chem 2019; 84:7829-7839. [PMID: 31117561 DOI: 10.1021/acs.joc.9b00710] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A catalytic asymmetric conjugate addition of indoles to o-hydroxyphenyl substituted p-quinone methides has been established in the presence of chiral phosphoric acid, which afforded chiral indole-containing triarylmethanes in generally high yields (54-98%) and good enantioselectivities (90:10-96:4 enantiomeric ratio). The control experiments indicated that o-hydroxyphenyl substituted p-quinone methides had a high possibility to transform into o-quinone methides in the presence of chiral phosphoric acid, and the formation of o-quinone methides might be a necessity for the reaction. This reaction will not only contribute to the research field of catalytic asymmetric transformations of p-quinone methides and o-quinone methides but also provide a useful method for the construction of enantioenriched triarylmethane frameworks.
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Affiliation(s)
- Jin-Rong Wang
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - Xiao-Li Jiang
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - Qing-Qing Hang
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - Shu Zhang
- Department of Radiotherapy , The First Affiliated Hospital of Nanjing Medical University , Nanjing 210029 , China
| | - Guang-Jian Mei
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - Feng Shi
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
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18
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Sun M, Ma C, Zhou S, Lou S, Xiao J, Jiao Y, Shi F. Catalytic Asymmetric (4+3) Cyclizations of In Situ Generated
ortho
‐Quinone Methides with 2‐Indolylmethanols. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901955] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Meng Sun
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
| | - Chun Ma
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
| | - Si‐Jia Zhou
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
| | - Sai‐Fan Lou
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
| | - Jian Xiao
- College of Chemistry and Pharmaceutical SciencesQingdao Agricultural University Qingdao 266109 P. R. China
| | - Yinchun Jiao
- School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Feng Shi
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116 P. R. China
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19
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Li Y, Zhang Z. Mechanism and stereoselectivity in NHC-catalyzed β-functionalization of saturated carboxylic ester. RSC Adv 2019; 9:7635-7644. [PMID: 35521168 PMCID: PMC9061211 DOI: 10.1039/c8ra10262g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 02/28/2019] [Indexed: 12/18/2022] Open
Abstract
To understand the mechanism and origin of the stereoselectivity of the [3 + 2] annulation reaction between a carboxylic ester and an isatin generating spirooxindole lactone catalyzed by N-heterocyclic carbene (NHC), density functional theory (DFT) calculations have been carried out. DFT results indicate that the catalytic cycle begins with the coupling of the catalyst with benzotriazole ester, followed by α-deprotonation to produce the enolate intermediate. The subsequent 1,4-proton transfer affords the homoenolate intermediate. The next crucial step is the stereoselective C-C bond formation. Then proton transfer takes place leading to the formation of the lactone intermediate. Finally, the elimination of the catalyst furnishes the final product. The presence of 1-hydroxybenzotriazole (HOBt) dramatically accelerates the proton transfer step. More importantly, HOBt has a non-negligible impact on stereoselective C-C bond formation, and the SR-configured product is the major stereoisomer of the annulation product, which is in good agreement with the experimental observations. The differential π⋯π stacking, C-H⋯π, lone pair (LP)⋯π and repulsion interactions are found to be responsible for the stereoselectivity. The obtained mechanistic insights should provide valuable information for understanding the important roles of the NHC catalyst and HOBt additive and be helpful for designing better NHC catalysts for this kind of reaction.
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Affiliation(s)
- Yan Li
- School of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 P. R. China +86-412-5929627 +86-18741219506
| | - Zhiqiang Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 P. R. China +86-412-5929627 +86-18741219506
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20
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Wang Y, Qu L, Wei D. Prediction on the Origin of Selectivities in Base‐controlled Switchable NHC‐catalyzed Transformations. Chem Asian J 2018; 14:293-300. [DOI: 10.1002/asia.201801583] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 11/28/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Yang Wang
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry 136 Science Avenue Zhengzhou Henan Province 450002 P. R. China
| | - Ling‐Bo Qu
- College of Chemistry and Molecular EngineeringZhengzhou University 100 Science Avenue Zhengzhou Henan Province 450002 P. R. China
| | - Donghui Wei
- College of Chemistry and Molecular EngineeringZhengzhou University 100 Science Avenue Zhengzhou Henan Province 450002 P. R. China
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21
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Lam H, Qureshi Z, Wegmann M, Lautens M. Transition‐Metal‐Free [4+3]‐Cycloaddition of
ortho
‐Quinone Methides and Isomünchnones: Catalytic and Diastereoselective Assembly of Oxa‐bridged Oxazocine Scaffolds. Angew Chem Int Ed Engl 2018; 57:16185-16189. [DOI: 10.1002/anie.201810760] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Heather Lam
- Davenport LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Zafar Qureshi
- Davenport LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Marcus Wegmann
- Davenport LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Mark Lautens
- Davenport LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
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22
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Lam H, Qureshi Z, Wegmann M, Lautens M. Transition‐Metal‐Free [4+3]‐Cycloaddition of
ortho
‐Quinone Methides and Isomünchnones: Catalytic and Diastereoselective Assembly of Oxa‐bridged Oxazocine Scaffolds. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810760] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Heather Lam
- Davenport LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Zafar Qureshi
- Davenport LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Marcus Wegmann
- Davenport LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Mark Lautens
- Davenport LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
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23
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Göricke F, Schneider C. Palladium-Catalyzed Enantioselective Addition of Chiral Metal Enolates to In Situ Generated ortho
-Quinone Methides. Angew Chem Int Ed Engl 2018; 57:14736-14741. [DOI: 10.1002/anie.201809692] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Fabian Göricke
- Institut für Organische Chemie; Universität Leipzig; Johannisallee 29 04103 Leipzig Germany
| | - Christoph Schneider
- Institut für Organische Chemie; Universität Leipzig; Johannisallee 29 04103 Leipzig Germany
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24
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Göricke F, Schneider C. Palladium-Catalyzed Enantioselective Addition of Chiral Metal Enolates to In Situ Generated ortho
-Quinone Methides. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809692] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fabian Göricke
- Institut für Organische Chemie; Universität Leipzig; Johannisallee 29 04103 Leipzig Germany
| | - Christoph Schneider
- Institut für Organische Chemie; Universität Leipzig; Johannisallee 29 04103 Leipzig Germany
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25
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Lang M, Wang J. N-Heterocyclic Carbene-Catalyzed Enantioselective β-Amination of α-Bromoenals Enabled by a Proton-Shuttling Strategy. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800648] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ming Lang
- School of Pharmaceutical Sciences; Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education); Tsinghua University; 100084 Beijing China
| | - Jian Wang
- School of Pharmaceutical Sciences; Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education); Tsinghua University; 100084 Beijing China
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26
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Kretzschmar M, Hofmann F, Moock D, Schneider C. Intramolekulare Aza‐Diels‐Alder‐Reaktionen von
ortho
‐Chinon‐ methidiminen – ein schneller, katalytischer und enantioselektiver Aufbau benzanellierter Chinolizidine. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800787] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Martin Kretzschmar
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Deutschland
| | - Fabian Hofmann
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Deutschland
| | - Daniel Moock
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Deutschland
| | - Christoph Schneider
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Deutschland
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27
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Kretzschmar M, Hofmann F, Moock D, Schneider C. Intramolecular Aza‐Diels–Alder Reactions of
ortho
‐Quinone Methide Imines: Rapid, Catalytic, and Enantioselective Assembly of Benzannulated Quinolizidines. Angew Chem Int Ed Engl 2018; 57:4774-4778. [DOI: 10.1002/anie.201800787] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Martin Kretzschmar
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Fabian Hofmann
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Daniel Moock
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Christoph Schneider
- Institut für Organische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
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28
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Hu Y, Pan D, Cong L, Yao Y, Yu C, Li T, Yao C. NHC-Catalyzed Efficient Syntheses of Isoquinolinones or Isochromanones through Formal [4+2] Cycloaddition of o
-Quinodimethanes with Acylhydrazones or Ketones. ChemistrySelect 2018. [DOI: 10.1002/slct.201702925] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yong Hu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials; School of Chemistry and Materials Science; Jiangsu Normal university, Xuzhou; Jiangsu 221116, P.R. China
| | - Di Pan
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials; School of Chemistry and Materials Science; Jiangsu Normal university, Xuzhou; Jiangsu 221116, P.R. China
| | - Lin Cong
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials; School of Chemistry and Materials Science; Jiangsu Normal university, Xuzhou; Jiangsu 221116, P.R. China
| | - Yibiao Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials; School of Chemistry and 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 and 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 and 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 and Materials Science; Jiangsu Normal university, Xuzhou; Jiangsu 221116, P.R. China
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29
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Fang C, Cao J, Sun K, Zhu J, Lu T, Du D. Direct and Enantioselective Synthesis of N-H-Free 1,5-Benzodiazepin-2-ones by an N-Heterocyclic Carbene Catalyzed [3+4] Annulation Reaction. Chemistry 2018; 24:2103-2108. [PMID: 29236349 DOI: 10.1002/chem.201705050] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 01/14/2023]
Abstract
An NHC-catalyzed formal [3+4] annulation of α,β-unsaturated acylazoliums with protecting-group-free aryl 1,2-diamines was developed for a direct and highly enantioselective synthesis of 4-aryl N-H-free 1,5-benzodiazepin-2-ones. This methodology offers an efficient and rapid access to a wide range of enantioenriched target compounds from easily accessible starting materials. The protocol is also scalable and the desired products can easily undergo subsequent N-functionalization to afford diverse N-substituted derivatives. Additionally, a mechanism was proposed to explain the high enantioselectivity in this process.
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Affiliation(s)
- Chao Fang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Jing Cao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Kewen Sun
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Jindong Zhu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
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30
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Wang Y, Wei D, Zhang W. Recent Advances on Computational Investigations ofN-Heterocyclic Carbene Catalyzed Cycloaddition/Annulation Reactions: Mechanism and Origin of Selectivities. ChemCatChem 2017. [DOI: 10.1002/cctc.201701119] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yang Wang
- The College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P.R. China
| | - Donghui Wei
- The College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P.R. China
| | - Wenjing Zhang
- The College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P.R. China
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31
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Chen XY, Xiong JW, Liu Q, Li S, Sheng H, von Essen C, Rissanen K, Enders D. Control of N-Heterocyclic Carbene Catalyzed Reactions of Enals: Asymmetric Synthesis of Oxindole-γ-Amino Acid Derivatives. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708994] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xiang-Yu Chen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Jia-Wen Xiong
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Qiang Liu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - He Sheng
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Carolina von Essen
- Department of Chemistry, Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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32
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Chen XY, Xiong JW, Liu Q, Li S, Sheng H, von Essen C, Rissanen K, Enders D. Control of N-Heterocyclic Carbene Catalyzed Reactions of Enals: Asymmetric Synthesis of Oxindole-γ-Amino Acid Derivatives. Angew Chem Int Ed Engl 2017; 57:300-304. [DOI: 10.1002/anie.201708994] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Xiang-Yu Chen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Jia-Wen Xiong
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Qiang Liu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - He Sheng
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Carolina von Essen
- Department of Chemistry, Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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33
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Zhao M, Zhang YT, Chen J, Zhou L. Enantioselective Reactions Catalyzed by N-Heterocyclic Carbenes. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700538] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ming Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University; Xi'an 710127 P. R. China
| | - Yu-Tong Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University; Xi'an 710127 P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University; Xi'an 710127 P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University; Xi'an 710127 P. R. China
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34
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Wu X, Xue L, Li D, Jia S, Ao J, Deng J, Yan H. Organocatalytic Intramolecular [4+2] Cycloaddition between In Situ Generated Vinylidene ortho
-Quinone Methides and Benzofurans. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707523] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaoyan Wu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Lu Xue
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Dongmei Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Shiqi Jia
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Jun Ao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Jun Deng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
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35
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Wu X, Xue L, Li D, Jia S, Ao J, Deng J, Yan H. Organocatalytic Intramolecular [4+2] Cycloaddition between In Situ Generated Vinylidene ortho
-Quinone Methides and Benzofurans. Angew Chem Int Ed Engl 2017; 56:13722-13726. [DOI: 10.1002/anie.201707523] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 08/27/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaoyan Wu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Lu Xue
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Dongmei Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Shiqi Jia
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Jun Ao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Jun Deng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research; School of Pharmaceutical Sciences; Chongqing University; Chongqing 401331 P. R. China
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36
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Chen XY, Liu Q, Chauhan P, Li S, Peuronen A, Rissanen K, Jafari E, Enders D. N-Heterocyclic Carbene Catalyzed [4+2] Annulation of Enals via a Double Vinylogous Michael Addition: Asymmetric Synthesis of 3,5-Diaryl Cyclohexenones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702881] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiang-Yu Chen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Qiang Liu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Pankaj Chauhan
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Anssi Peuronen
- Department of Chemistry; Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Kari Rissanen
- Department of Chemistry; Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Ehsan Jafari
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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37
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Chen XY, Liu Q, Chauhan P, Li S, Peuronen A, Rissanen K, Jafari E, Enders D. N-Heterocyclic Carbene Catalyzed [4+2] Annulation of Enals via a Double Vinylogous Michael Addition: Asymmetric Synthesis of 3,5-Diaryl Cyclohexenones. Angew Chem Int Ed Engl 2017; 56:6241-6245. [DOI: 10.1002/anie.201702881] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Xiang-Yu Chen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Qiang Liu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Pankaj Chauhan
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Anssi Peuronen
- Department of Chemistry; Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Kari Rissanen
- Department of Chemistry; Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Ehsan Jafari
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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38
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Chen M, Sun J. Catalytic Asymmetric N-Alkylation of Indoles and Carbazoles through 1,6-Conjugate Addition of Aza-para-quinone Methides. Angew Chem Int Ed Engl 2017; 56:4583-4587. [PMID: 28332764 DOI: 10.1002/anie.201701947] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 03/01/2017] [Indexed: 01/24/2023]
Abstract
Catalytic asymmetric N-alkylation of indoles and carbazoles represents a family of important but underdeveloped reactions. Herein, we describe a new organocatalytic strategy in which in situ generated aza-para-quinone methides are employed as the alkylating reagent. With the proper choice of a chiral phosphoric acid and an N-protective group, the intermolecular C-N bond formation with various indole and carbazole nucleophiles proceeded efficiently under mild conditions with excellent enantioselectivity and functional-group compatibility. Control experiments and kinetic studies provided important insight into the reaction mechanism.
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Affiliation(s)
- Min Chen
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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39
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Chen M, Sun J. Catalytic Asymmetric N-Alkylation of Indoles and Carbazoles through 1,6-Conjugate Addition of Aza-para
-quinone Methides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701947] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Min Chen
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
| | - Jianwei Sun
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
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40
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Wu X, Hao L, Zhang Y, Rakesh M, Reddi RN, Yang S, Song BA, Chi YR. Construction of Fused Pyrrolidines and β-Lactones by Carbene-Catalyzed C-N, C-C, and C-O Bond Formations. Angew Chem Int Ed Engl 2017; 56:4201-4205. [PMID: 28295941 DOI: 10.1002/anie.201700045] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 02/12/2017] [Indexed: 01/25/2023]
Abstract
A carbene-catalyzed intermolecular C-N bond formation, which initiates a highly selective cascade reaction for the synthesis of pyrrolidine fused β-lactones, is disclosed. The nitrogen-containing bicyclic β-lactone products are obtained with good yields and excellent stereoselectivities. Synthetic transformations of the reaction products into useful functional molecules, such as amino catalysts, can be efficiently realized under mild reaction conditions. Mechanistically, this study provides insights into modulating the reactivities of heteroatoms, such as nitrogen atoms, in challenging carbene-catalyzed asymmetric carbon-heteroatom bond-forming reactions.
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Affiliation(s)
- Xingxing Wu
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Lin Hao
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Yuexia Zhang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Maiti Rakesh
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Rambabu N Reddi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Song Yang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Bao-An Song
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.,Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
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41
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Wu X, Hao L, Zhang Y, Rakesh M, Reddi RN, Yang S, Song BA, Chi YR. Construction of Fused Pyrrolidines and β-Lactones by Carbene-Catalyzed C−N, C−C, and C−O Bond Formations. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xingxing Wu
- Division of Chemistry & Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Lin Hao
- Division of Chemistry & Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Yuexia Zhang
- Division of Chemistry & Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Maiti Rakesh
- Division of Chemistry & Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Rambabu N. Reddi
- Division of Chemistry & Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Song Yang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering; Ministry of Education; Guizhou University; Huaxi District Guiyang 550025 China
| | - Bao-An Song
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering; Ministry of Education; Guizhou University; Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering; Ministry of Education; Guizhou University; Huaxi District Guiyang 550025 China
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42
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Wu B, Yu Z, Gao X, Lan Y, Zhou YG. Regioselective α-Addition of Deconjugated Butenolides: Enantioselective Synthesis of Dihydrocoumarins. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700437] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bo Wu
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 P.R. China
| | - Zhaoyuan Yu
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P.R. China
| | - Xiang Gao
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 P.R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P.R. China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 P.R. China
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43
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Wu B, Yu Z, Gao X, Lan Y, Zhou YG. Regioselective α-Addition of Deconjugated Butenolides: Enantioselective Synthesis of Dihydrocoumarins. Angew Chem Int Ed Engl 2017; 56:4006-4010. [PMID: 28247568 DOI: 10.1002/anie.201700437] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Indexed: 11/08/2022]
Abstract
The enantioselective α-addition of deconjugated butenolides has rarely been exploited, in contrast to the well-studied γ-addition of deconjugated butenolides. In this study, an unprecedented asymmetric α-addition/transesterification of deconjugated butenolides with ortho-quinone methides generated in situ afforded a series of functionalized 3,4-dihydrocoumarins containing two contiguous stereogenic centers with excellent diastereo- and enantioselectivity. DFT calculations suggested that the rarely observed regioselectivity was due to the distortion energy that resulted from the interaction between the nucleophilic dienolate and the electrophilic ortho-quinone methide.
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Affiliation(s)
- Bo Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P.R. China
| | - Zhaoyuan Yu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, P.R. China
| | - Xiang Gao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P.R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, P.R. China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P.R. China
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44
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Chen P, Wang K, Guo W, Liu X, Liu Y, Li C. Enantioselective Reactions of 2‐Sulfonylalkyl Phenols with Allenic Esters: Dynamic Kinetic Resolution and [4+2] Cycloaddition Involving
ortho
‐Quinone Methide Intermediates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700250] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ping Chen
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Kai Wang
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Wengang Guo
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Xianghui Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Yan Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Can Li
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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45
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Chen P, Wang K, Guo W, Liu X, Liu Y, Li C. Enantioselective Reactions of 2‐Sulfonylalkyl Phenols with Allenic Esters: Dynamic Kinetic Resolution and [4+2] Cycloaddition Involving
ortho
‐Quinone Methide Intermediates. Angew Chem Int Ed Engl 2017; 56:3689-3693. [DOI: 10.1002/anie.201700250] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Ping Chen
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Kai Wang
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Wengang Guo
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Xianghui Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Yan Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Can Li
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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46
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Yang LC, Rong ZQ, Wang YN, Tan ZY, Wang M, Zhao Y. Construction of Nine-Membered Heterocycles through Palladium-Catalyzed Formal [5+4] Cycloaddition. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611474] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Li-Cheng Yang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zi-Qiang Rong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Ya-Nong Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zher Yin Tan
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Min Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
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47
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Yang LC, Rong ZQ, Wang YN, Tan ZY, Wang M, Zhao Y. Construction of Nine-Membered Heterocycles through Palladium-Catalyzed Formal [5+4] Cycloaddition. Angew Chem Int Ed Engl 2017; 56:2927-2931. [DOI: 10.1002/anie.201611474] [Citation(s) in RCA: 213] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/02/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Li-Cheng Yang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zi-Qiang Rong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Ya-Nong Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zher Yin Tan
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Min Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
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48
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Gharui C, Singh S, Pan SC. Chiral phosphoric acid catalyzed enantioselective annulation of acyclic enecarbamates to in situ-generated ortho-quinone methides. Org Biomol Chem 2017; 15:7272-7276. [DOI: 10.1039/c7ob01766a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The first organocatalytic asymmetric [4 + 2]-cycloaddition reaction between acyclic enecarbamates with in situ generated ortho-quinone methides has been developed using chiral phosphoric acids as catalysts.
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Affiliation(s)
- Chandan Gharui
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Shreya Singh
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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49
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Zhu Y, Zhang WZ, Zhang L, Luo S. Chiral Primary Amine Catalyzed Asymmetric α-Benzylation with In Situ Generatedortho-Quinone Methides. Chemistry 2016; 23:1253-1257. [DOI: 10.1002/chem.201605302] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Yunbo Zhu
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Wen-Zhao Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Long Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Sanzhong Luo
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
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50
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Yang QQ, Xiao WJ. Catalytic Asymmetric Synthesis of Chiral Dihydrobenzofurans through a Formal [4+1] Annulation Reaction of Sulfur Ylides and In Situ Generatedortho-Quinone Methides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601186] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Qing-Qing Yang
- College of Materials and Chemical Engineering; Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials; China Three Gorges University; 8 Daxue Road 443002 Yichang Hubei China
- Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road 430079 Wuhan Hubei China
| | - Wen-Jing Xiao
- Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road 430079 Wuhan Hubei China
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