1
|
Yisimayili N, Lu CD. Stereoselective Construction of Less-Accessible Acyclic α,α-Disubstituted β-Ketiminonitriles via Electrophilic Cyanation of β,β-Disubstituted Enesulfinamides. Org Lett 2024; 26:4371-4376. [PMID: 38752686 DOI: 10.1021/acs.orglett.4c01409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The metalloenamines, formed by NH-deprotonation of β,β-disubstituted enesulfinamides, can undergo reactions with commercially available electrophilic cyanating reagents such as tosyl cyanide (TsCN) or 3-oxo-1,2-benziodoxole-1(3H)-carbonitrile (CBX). Through the utilization of appropriate stereoisomers of enesulfinamides, this method enables the selective synthesis of any of the four stereoisomers of α,α-disubstituted β-sulfinylimino nitriles, which feature acyclic quaternary stereocenters and are typically more challenging to synthesize. These compounds can then undergo stereoselective nucleophilic addition, leading to the creation of valuable enantioenriched multisubstituted β-amino carbonyl surrogates with a high degree of structural diversity.
Collapse
Affiliation(s)
| | - Chong-Dao Lu
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China
- School of Health, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| |
Collapse
|
2
|
Tsuyusaki R, Nakashima K, Matsushima Y, Hirashima SI, Miura T. Vicinal All-Carbon Quaternary Stereocenter Construction with Trifluoromethyl Groups via Organocatalytic Asymmetric Cascade Michael/Michael Reaction. Chem Asian J 2024; 19:e202300931. [PMID: 37968242 DOI: 10.1002/asia.202300931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 11/17/2023]
Abstract
A thiourea organocatalyst efficiently promoted the asymmetric cascade Michael/Michael reactions between isatin-derived trifluoromethylacrylate and α-alkylidene succinimide, resulting in high yields of spirooxindole derivatives. These compounds exhibit vicinal all-carbon quaternary stereocenters and bear a trifluoromethyl group, with excellent enantioselectivities reaching up to 99 % ee. This work represents the first successful organocatalyst application for the direct construction of vicinal all-carbon quaternary stereocenters, featuring a trifluoromethyl group.
Collapse
Affiliation(s)
- Ryo Tsuyusaki
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Kosuke Nakashima
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Yasuyuki Matsushima
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Shin-Ichi Hirashima
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Tsuyoshi Miura
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| |
Collapse
|
3
|
Kanemitsu T, Ozasa E, Murase Y, Sakaue S, Miyazaki M, Nagata K, Itoh T. Asymmetric Construction of All‐Carbon Quaternary Stereocenters via Organocatalytic α‐Hydroxymethylation of Malonic Diesters Using Aqueous Formaldehyde. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Takuya Kanemitsu
- School of Pharmacy Showa University 1-5-8 Hatanodai, Shinagawa-ku Tokyo 142-8555 Japan
| | - Eisuke Ozasa
- School of Pharmacy Showa University 1-5-8 Hatanodai, Shinagawa-ku Tokyo 142-8555 Japan
| | - Yuria Murase
- School of Pharmacy Showa University 1-5-8 Hatanodai, Shinagawa-ku Tokyo 142-8555 Japan
| | - Susumu Sakaue
- School of Pharmacy Showa University 1-5-8 Hatanodai, Shinagawa-ku Tokyo 142-8555 Japan
| | - Michiko Miyazaki
- School of Pharmacy Showa University 1-5-8 Hatanodai, Shinagawa-ku Tokyo 142-8555 Japan
| | - Kazuhiro Nagata
- School of Pharmacy Showa University 1-5-8 Hatanodai, Shinagawa-ku Tokyo 142-8555 Japan
| | - Takashi Itoh
- School of Pharmacy Showa University 1-5-8 Hatanodai, Shinagawa-ku Tokyo 142-8555 Japan
| |
Collapse
|
4
|
Ishii D, Hirashima S, Akutsu H, Nakashima K, Matsushima Y, Sakai T, Miura T. Asymmetric Direct Vinylogous Conjugate Addition of Substituted Furanone Derivatives to (
E
)‐ and (
Z)
‐Benzoyl Acrylonitriles Using Organocatalysts. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daiki Ishii
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Shin‐ichi Hirashima
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Hiroshi Akutsu
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Kosuke Nakashima
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Yasuyuki Matsushima
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Takaaki Sakai
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Tsuyoshi Miura
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| |
Collapse
|
5
|
Nakashima K, Minai A, Okuaki Y, Matsushima Y, Hirashima SI, Miura T. Organocatalytic one-pot asymmetric synthesis of 6-trifluoromethyl-substituted 7,8-dihydrochromen-6-ol. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153733] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Kawada M, Tsuyusaki R, Nakashima K, Yamada M, Kozakai A, Matsushima Y, Hirashima SI, Miura T. Asymmetric Henry reaction of trifluoromethyl enones with nitromethane using a N,N-dibenzyl diaminomethylenemalononitrile organocatalyst. Chem Asian J 2021; 17:e202101299. [PMID: 34927372 DOI: 10.1002/asia.202101299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/17/2021] [Indexed: 11/10/2022]
Abstract
A novel N,N -dibenzyl diaminomethylenemalononitrile organocatalyst efficiently promoted asymmetric Henry reactions of trifluoromethyl enones with nitromethane, affording corresponding highly functionalized products in high yields with excellent enantioselectivities (up to 90% ee). This study is the first to report the successful example of the asymmetric 1,2-additions of nitromethane to trifluoromethyl enones.
Collapse
Affiliation(s)
- Masahiro Kawada
- Tokyo Yakka Daigaku Yakugakubu Daigakuin Yakugaku Kenkyuka, School of Pharmacy, JAPAN
| | - Ryo Tsuyusaki
- Tokyo Yakka Daigaku Yakugakubu Daigakuin Yakugaku Kenkyuka, school of pharmacy, JAPAN
| | - Kosuke Nakashima
- Tokyo Yakka Daigaku Yakugakubu Daigakuin Yakugaku Kenkyuka, School of pharmacy, JAPAN
| | | | | | | | | | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences, School of Pharmacy, 1432-1 Horinouchi, Hachioji, 192-0392, Tokyo, JAPAN
| |
Collapse
|
7
|
Kawada M, Tsuyusaki R, Nakashima K, Akutsu H, Hirashima SI, Matsumoto T, Yanai H, Miura T. Diaminomethylenemalononitrile as a Chiral Single Hydrogen Bond Catalyst: Application to Enantioselective Conjugate Addition of α-Branched Aldehydes. Chem Asian J 2021; 16:2272-2275. [PMID: 34216113 DOI: 10.1002/asia.202100487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/22/2021] [Indexed: 11/09/2022]
Abstract
An improved diaminomethylenemalononitrile organocatalyst, bearing a N,N-disubstituted structure, promoted enantioselective conjugate addition reaction of α-branched aldehydes with vinyl sulfone, affording adducts with excellent enantioselectivities (up to 96% ee). Mechanistic studies revealed that the diaminomethylenemalononitrile motif holds the vinyl sulfone substrate using a single hydrogen bond accompanied by multiple weak interactions, including electrostatic C-H⋅⋅⋅O interactions.
Collapse
Affiliation(s)
- Masahiro Kawada
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Ryo Tsuyusaki
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Kosuke Nakashima
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Hiroshi Akutsu
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Shin-Ichi Hirashima
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Takashi Matsumoto
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Tsuyoshi Miura
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| |
Collapse
|
8
|
Lane JDE, Berry SN, Lewis W, Ho J, Jolliffe KA. Diaminomethylenemalononitriles and Diaminomethyleneindanediones as Dual Hydrogen Bond Donors for Anion Recognition. J Org Chem 2021; 86:4957-4964. [PMID: 33755453 DOI: 10.1021/acs.joc.0c02801] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diaminomethylenemalononitriles (DMMs) and diaminomethyleneindanediones (DMIs) are dual H-bond donors that have previously been used as organocatalysts, but their anion binding ability has not been investigated. We report the synthesis of both alkyl- and aryl-substituted DMMs and DMIs, together with a comparison of their anion binding ability with that of the analogous thioureas. The DMMs display affinity for monovalent anions, with similar anion binding affinities observed to that of the thioureas in acetonitrile, albeit with differing trends for the N,N'-dialkyl versus N,N'-diaryl compounds. In contrast, the DMIs do not bind to monovalent anions under similar conditions as a result of conformational locking through the formation of intramolecular H-bonds. This can be overcome upon addition of sulfate ions, and binding of sulfate is enhanced in a more competitive solvent (DMSO).
Collapse
Affiliation(s)
- Jakob D E Lane
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Stuart N Berry
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - William Lewis
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.,Sydney Analytical, The University of Sydney, Sydney, NSW 2006, Australia
| | - Junming Ho
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Katrina A Jolliffe
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.,The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW 2006, Australia
| |
Collapse
|
9
|
Xu YL, Qin ZZ, Wang YX, Zhao PF, Li HF, Du ZH, Da CS. Highly enantioselective one-pot sequential synthesis of valerolactones and pyrazolones bearing all-carbon quaternary stereocentres. Org Biomol Chem 2021; 19:1610-1615. [PMID: 33528484 DOI: 10.1039/d0ob02489a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Highly enantiopure and bioactive δ-valerolactones and pyrazolones, bearing α-all-carbon quaternary stereocentres, were successfully and sequentially prepared via a one-pot procedure starting from readily available, inexpensive materials, catalysed by a new chiral squaramide under mild reaction conditions. An organocatalytic Michael reaction afforded the valerolactones, while a one-pot Michael-hydrazinolysis-imidization cascade yielded the pyrazolones. This procedure is economically efficient and environmentally benign.
Collapse
Affiliation(s)
- Yan-Li Xu
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Zhou-Zhou Qin
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Yu-Xia Wang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Peng-Fei Zhao
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Hong-Feng Li
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Zhi-Hong Du
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Chao-Shan Da
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China. and State Key Laboratory of Applied Organic Chemistry, Key Lab of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
10
|
Ishii D, Hirashima SI, Nakashima K, Akutsu H, Sakai T, Matsushima Y, Kawada M, Miura T. Asymmetric Direct Vinylogous Conjugate Addition of Substituted Furanone Derivatives to Benzoyl Acrylonitrile: Stereoselective Synthesis Toward Bicyclic γ-Lactams. Org Lett 2020; 23:480-485. [DOI: 10.1021/acs.orglett.0c04004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Daiki Ishii
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shin-ichi Hirashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kosuke Nakashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hiroshi Akutsu
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Takaaki Sakai
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yasuyuki Matsushima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Masahiro Kawada
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| |
Collapse
|
11
|
Miura T, Akutsu H, Nakashima K, Kanetsuna Y, Kawada M, Hirashima SI. Asymmetric Conjugate Addition of α-Cyanoketones to Benzoyl Acrylonitrile Derivatives Using a Diaminomethylenemalononitrile Organocatalyst. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707285] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractA diaminomethylenemalononitrile (DMM) organocatalyst was used to efficiently promote asymmetric conjugate addition of various α-cyanoketones to benzoyl acrylonitrile derivatives. The corresponding 1,5-dicarbonyl compounds containing vicinal tertiary and quaternary stereogenic centers are versatile synthetic intermediates and were obtained in good yields and with excellent enantioselectivities (up to 96% ee). The present study describes the first successful examples of asymmetric conjugate addition reactions of α-cyanoketones with benzoyl acrylonitriles. In addition, the DMM organocatalyst can be recovered and reused up to five times without significant loss of either catalytic activity or enantioselectivity.
Collapse
|
12
|
A magnetic metal organic framework material as a highly efficient and recyclable catalyst for synthesis of cyclohexenone derivatives. J Catal 2020. [DOI: 10.1016/j.jcat.2020.04.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
13
|
Lu Z, Hu XD, Zhang H, Zhang XW, Cai J, Usman M, Cong H, Liu WB. Enantioselective Assembly of Cycloenones with a Nitrile-Containing All-Carbon Quaternary Center from Malononitriles Enabled by Ni Catalysis. J Am Chem Soc 2020; 142:7328-7333. [PMID: 32255625 DOI: 10.1021/jacs.0c02075] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Chiral nitriles are valuable molecules in modern organic synthesis and drug discovery. Selectively differentiating the two nitrile groups of widely available malononitrile derivatives is a straightforward yet underdeveloped route to construct enantioenriched nitriles. Here we report an enantioselective nickel-catalyzed desymmetrization of malononitriles for the generation of nitrile-containing all-carbon quaternary stereocenters. This protocol involves a nickel-catalyzed addition of aryl boronic acids to alkynes, followed by a selective nitrile insertion, providing unprecedented access to enantioenriched 5-7-membered α-cyano-cycloenones with a fully substituted olefin from a broad range of substrates. The synthetic utility of these nitrile products is demonstrated by gram-scale synthesis and conversion to several useful functional groups.
Collapse
Affiliation(s)
- Zhiwu Lu
- Sauvage Center for Molecule Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Xu-Dong Hu
- Sauvage Center for Molecule Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Hui Zhang
- Sauvage Center for Molecule Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Xiao-Wen Zhang
- Sauvage Center for Molecule Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Jinhui Cai
- Sauvage Center for Molecule Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Muhammad Usman
- Sauvage Center for Molecule Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Hengjiang Cong
- Sauvage Center for Molecule Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Wen-Bo Liu
- Sauvage Center for Molecule Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| |
Collapse
|
14
|
Akutsu H, Ito M, Kawada M, Nakashima K, Hirashima SI, Miura T. Organocatalytic asymmetric conjugate addition of substituted 5-benzylfurfurals to nitroalkenes based on stereocontrol of trienamine. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151478] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
15
|
Arai R, Hirashima SI, Nakano T, Kawada M, Akutsu H, Nakashima K, Miura T. Asymmetric Conjugate Addition of Phosphonates to Enones Using Cinchona–Diaminomethylenemalononitrile Organocatalysts. J Org Chem 2020; 85:3872-3878. [PMID: 31986038 DOI: 10.1021/acs.joc.9b02553] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ryoga Arai
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shin-ichi Hirashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tatsuki Nakano
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Masahiro Kawada
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hiroshi Akutsu
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kosuke Nakashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| |
Collapse
|
16
|
Odanaka Y, Kanemitsu T, Iwasaki K, Mochizuki Y, Miyazaki M, Nagata K, Kato M, Itoh T. Asymmetric Michael addition of malonic diesters to acrylates by phase-transfer catalysis toward the construction of quaternary stereogenic α-carbons. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.11.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
17
|
Nagata T, Tamaki A, Kiyokawa K, Tsutsumi R, Yamanaka M, Minakata S. Enantioselective Electrophilic Cyanation of Boron Enolates: Scope and Mechanistic Studies. Chemistry 2018; 24:17027-17032. [DOI: 10.1002/chem.201804455] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Takaya Nagata
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita, Osaka 565-0871 Japan
| | - Atsuko Tamaki
- Department of ChemistryFaculty of ScienceRikkyo University 3-34-1 Nishi-Ikebukuro, Toshima-ku Tokyo 171-8501 Japan
| | - Kensuke Kiyokawa
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita, Osaka 565-0871 Japan
| | - Ryosuke Tsutsumi
- Department of ChemistryFaculty of ScienceRikkyo University 3-34-1 Nishi-Ikebukuro, Toshima-ku Tokyo 171-8501 Japan
| | - Masahiro Yamanaka
- Department of ChemistryFaculty of ScienceRikkyo University 3-34-1 Nishi-Ikebukuro, Toshima-ku Tokyo 171-8501 Japan
| | - Satoshi Minakata
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita, Osaka 565-0871 Japan
| |
Collapse
|
18
|
Arai R, Hirashima SI, Kondo J, Nakashima K, Koseki Y, Miura T. Cinchona-Diaminomethylenemalononitrile Organocatalyst for the Highly Enantioselective Hydrophosphonylation of Ketones and Enones. Org Lett 2018; 20:5569-5572. [PMID: 30199261 DOI: 10.1021/acs.orglett.8b02241] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The use of diaminomethylenemalononitrile (DMM) organocatalyst to promote the challenging 1,2-hydrophosphonylation of simple ketones and enones, which are also called α,β-unsaturated ketones, is proposed and validated. This reaction provided the corresponding chiral α-hydroxy phosphonates in high to excellent yields and with enantioselectivity up to 96% ee.
Collapse
Affiliation(s)
- Ryoga Arai
- Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi , Hachioji , Tokyo 192-0392 , Japan
| | - Shin-Ichi Hirashima
- Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi , Hachioji , Tokyo 192-0392 , Japan
| | - Junko Kondo
- Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi , Hachioji , Tokyo 192-0392 , Japan
| | - Kosuke Nakashima
- Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi , Hachioji , Tokyo 192-0392 , Japan
| | - Yuji Koseki
- Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi , Hachioji , Tokyo 192-0392 , Japan
| | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi , Hachioji , Tokyo 192-0392 , Japan
| |
Collapse
|