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Yoshiwara Y, Kotani S, Nakajima M. Enantioselective and Chemoselective Phosphine Oxide-catalyzed Aldol Reactions of N-Unprotected Cyclic Carboxyimides. Chemistry 2023; 29:e202203506. [PMID: 36526949 DOI: 10.1002/chem.202203506] [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: 11/11/2022] [Revised: 12/05/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Asymmetric catalytic transformations of N-unprotected cyclic carboxyimides such as succinimides, hydantoins, oxazolidinediones, and glitazones, is a powerful way of directly accessing variety of biologically valuable chiral compounds. Herein, a bis(trichlorosilyl) nucleophilic intermediate formed from cyclic carboxyimides was reacted with aldehydes via (S)-SEGPHOS dioxide (SEGPHOSO), proceeding the aldol reaction in highly enantioselective fashion through a cyclic transition state. Furthermore, N-unprotected carboxyimides were chemoselectively activated, even in the presence of N-alkylated carboxyimides, to undergo stereoselective and chemoselective aldol reactions via in situ silicon tetrachloride activation. The functionalized cyclic carboxyimides is readily derived to the several synthetic units derivatization to various chiral building blocks without unnecessary protection/deprotection steps.
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Affiliation(s)
- Yusaku Yoshiwara
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
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2
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Dentani T, Kawachi A, Kato M, Yoshimura T, Matsuo JI. Cascade cyclization of 1,2,7,8-tetraones and total synthesis of (±)-nesteretal A. Org Chem Front 2022. [DOI: 10.1039/d2qo00740a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the short synthesis of highly oxidized complex molecules, regioselectivity and stereoselectivity of intramolecular domino aldol cyclization/acetalizations of 1,2,7,8-tetraones were investigated by using catalytic amounts of Brønsted bases, Brønsted acids,...
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3
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Kotani S, Nakajima M. Asymmetric cross-Aldol Reactions between Two Carbonyl Compounds Catalyzed by Chiral Phosphine Oxides. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.1163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences, Kumamoto University
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences, Kumamoto University
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Mirco AV, Maurizio B, Sergio R, Tiziana B, Roberto C, Marco P. TetraPh-Tol-BITIOPO: a new atropisomeric 3,3'-bithiophene based phosphine oxide as an organocatalyst in Lewis base-catalyzed Lewis acid mediated reactions. Org Biomol Chem 2019; 17:7474-7481. [PMID: 31361281 DOI: 10.1039/c9ob01297d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new chiral phosphine oxide based on a 3,3'-bithiophene scaffold (TetraPh-Tol-BITIOPO) was synthesized, fully characterized and separated into antipodes through chiral HPLC. This new compound was successfully employed as an organocatalyst in Lewis base-catalyzed Lewis acid mediated reactions involving trichlorosilyl compounds. The new atropisomeric catalyst was able to promote the allylation of aldehydes with allyltrichlorosilane in up to 98% yield and up to 96% enantiomeric excess (ee), and the direct aldol reaction to afford β-hydroxy ketones and β-hydroxy thioesters, with good chemical yields and modest stereochemical efficiency. Computational studies helped to elucidate and to rationalize the stereochemical outcome of the reactions catalyzed by TetraPh-Tol-BITIOPO that was found to favour the formation of the isomer with an opposite absolute configuration in comparison with the products obtained with the previously reported 3,3'-bithiophene-based catalyst.
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Affiliation(s)
- Abbinante Vincenzo Mirco
- Dipartimento di Scienza ed Alta Tecnologia dell'Università dell'Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Benaglia Maurizio
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy.
| | - Rossi Sergio
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy.
| | - Benincori Tiziana
- Dipartimento di Scienza ed Alta Tecnologia dell'Università dell'Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Cirilli Roberto
- Centro Nazionale per il Controllo e la Valutazione dei Farmaci, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Roma, Italy
| | - Pierini Marco
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma "La Sapienza", Piazzale Aldo Moro 5, 00185 Roma, Italy
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Ayad T, Gernet A, Pirat JL, Virieux D. Enantioselective reactions catalyzed by phosphine oxides. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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Kotani S. Phosphine Oxide-Catalyzed Asymmetric Aldol Reactions and Double Aldol Reactions. Chem Pharm Bull (Tokyo) 2019; 67:519-526. [PMID: 31155556 DOI: 10.1248/cpb.c19-00015] [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] [Indexed: 11/22/2022]
Abstract
Chiral phosphine oxides successfully catalyze asymmetric cross-aldol reactions of various carbonyl compounds in a highly enantioselective manner. The phosphine oxide catalysts coordinate to chlorosilanes to form chiral hypervalent silicon complexes in situ, which activate both aldol donors and acceptors, thus realizing cross-aldol reactions between a ketone and an aldehyde, between two aldehydes, between two ketones, and of 2,6-diketones. The use of phosphine oxide catalysis can be further extended to achieve the first catalytic enantioselective double aldol reactions, realizing one-pot stereoselective construction of up to four stereogenic centers.
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Affiliation(s)
- Shunsuke Kotani
- Priority Organization for Innovation and Excellence Kumamoto University.,Graduate School of Pharmaceutical Sciences, Kumamoto University
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8
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Rizzo A, Mayer RJ, Trauner D. Biomimetic Approach Toward Enterocin and Deoxyenterocin. J Org Chem 2018; 84:1162-1175. [DOI: 10.1021/acs.joc.8b02273] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Antonio Rizzo
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstraße 5−13, 81377 München, Germany
| | - Robert J. Mayer
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstraße 5−13, 81377 München, Germany
| | - Dirk Trauner
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstraße 5−13, 81377 München, Germany
- Department of Chemistry, New York University 100 Washington Square East, Room 712, New York, New York 10003, United States
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9
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Kotani S, Yoshiwara Y, Ogasawara M, Sugiura M, Nakajima M. Catalytic Enantioselective Aldol Reactions of Unprotected Carboxylic Acids under Phosphine Oxide Catalysis. Angew Chem Int Ed Engl 2018; 57:15877-15881. [PMID: 30298544 DOI: 10.1002/anie.201810599] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences; Kumamoto University; 5-1 Oe-honmachi, Chuo-ku Kumamoto 862-0973 Japan
- Priority Organization for Innovation and Excellence; Kumamoto University; 5-1 Oe-honmachi, Chuo-ku Kumamoto 862-0973 Japan
| | - Yusaku Yoshiwara
- Graduate School of Pharmaceutical Sciences; Kumamoto University; 5-1 Oe-honmachi, Chuo-ku Kumamoto 862-0973 Japan
| | - Masamichi Ogasawara
- Graduate School of Science and Technology; Tokushima University; 2-1 Minamijyousanjima-cho Tokushima 770-8506 Japan
| | - Masaharu Sugiura
- Faculty of Pharmaceutical Sciences; Sojo University; 4-22-1 Ikeda, Nishi-ku Kumamoto 860-0082 Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences; Kumamoto University; 5-1 Oe-honmachi, Chuo-ku Kumamoto 862-0973 Japan
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10
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Kotani S, Yoshiwara Y, Ogasawara M, Sugiura M, Nakajima M. Catalytic Enantioselective Aldol Reactions of Unprotected Carboxylic Acids under Phosphine Oxide Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810599] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences; Kumamoto University; 5-1 Oe-honmachi, Chuo-ku Kumamoto 862-0973 Japan
- Priority Organization for Innovation and Excellence; Kumamoto University; 5-1 Oe-honmachi, Chuo-ku Kumamoto 862-0973 Japan
| | - Yusaku Yoshiwara
- Graduate School of Pharmaceutical Sciences; Kumamoto University; 5-1 Oe-honmachi, Chuo-ku Kumamoto 862-0973 Japan
| | - Masamichi Ogasawara
- Graduate School of Science and Technology; Tokushima University; 2-1 Minamijyousanjima-cho Tokushima 770-8506 Japan
| | - Masaharu Sugiura
- Faculty of Pharmaceutical Sciences; Sojo University; 4-22-1 Ikeda, Nishi-ku Kumamoto 860-0082 Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences; Kumamoto University; 5-1 Oe-honmachi, Chuo-ku Kumamoto 862-0973 Japan
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11
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Sevrain N, Volle JN, Pirat JL, Ayad T, Virieux D. Chiral Bisdiphenylphosphine Dioxides Bearing a Bis(triazolyl) Backbone as Promising Lewis Bases for Asymmetric Organocatalysis. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800317] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nicolas Sevrain
- AM2N, Ecole Supérieure de Chimie de Montpellier; Institut Charles Gerhardt - CNRS UMR 5253; 8 rue de l'Ecole Normale 34296 Montpellier CEDEX 5 France
| | - Jean-Noel Volle
- AM2N, Ecole Supérieure de Chimie de Montpellier; Institut Charles Gerhardt - CNRS UMR 5253; 8 rue de l'Ecole Normale 34296 Montpellier CEDEX 5 France
| | - Jean-Luc Pirat
- AM2N, Ecole Supérieure de Chimie de Montpellier; Institut Charles Gerhardt - CNRS UMR 5253; 8 rue de l'Ecole Normale 34296 Montpellier CEDEX 5 France
| | - Tahar Ayad
- AM2N, Ecole Supérieure de Chimie de Montpellier; Institut Charles Gerhardt - CNRS UMR 5253; 8 rue de l'Ecole Normale 34296 Montpellier CEDEX 5 France
- Chimie ParisTech - CNRS; Institut de Recherche de Chimie Paris; PSL Research University; 75005 Paris France
| | - David Virieux
- AM2N, Ecole Supérieure de Chimie de Montpellier; Institut Charles Gerhardt - CNRS UMR 5253; 8 rue de l'Ecole Normale 34296 Montpellier CEDEX 5 France
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12
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Malone JA, Van Houten JP, Ganiu MO, Nepal B, Kartika R. Brønsted Acid Catalyzed Synthesis of Functionalized 1,4- and 1,6-Dicarbonyl Monosilyl Enol Ethers under Operationally Practical Conditions. J Org Chem 2017; 82:10659-10664. [PMID: 28849920 DOI: 10.1021/acs.joc.7b01687] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report an improved protocol for the concise synthesis of functionalized 1,4- and 1,6-dicarbonyl-derived monosilyl enol ethers via ionization of α'-hydroxy silyl enol ethers to generate unsymmetrical silyloxyallyl cations that were subsequently captured by TBS silyl enolates. These transformations were efficiently performed in acetonitrile at room temperature by employing pyridinium triflate as a catalyst. Our new reaction conditions are operationally more practical and broaden the accessibility of various 1,4- and 1,6-dicarbonyl groups, which include diketone, ketoester, and ketothioester functionalities.
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Affiliation(s)
- Joshua A Malone
- Department of Chemistry 232 Choppin Hall Louisiana State University Baton Rouge, Louisiana 70803, United States
| | - Joshua P Van Houten
- Department of Chemistry 232 Choppin Hall Louisiana State University Baton Rouge, Louisiana 70803, United States
| | - Moshood O Ganiu
- Department of Chemistry 232 Choppin Hall Louisiana State University Baton Rouge, Louisiana 70803, United States
| | - Binod Nepal
- Department of Chemistry 232 Choppin Hall Louisiana State University Baton Rouge, Louisiana 70803, United States
| | - Rendy Kartika
- Department of Chemistry 232 Choppin Hall Louisiana State University Baton Rouge, Louisiana 70803, United States
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Li S, Chen F, Li N, Wang W, Sheng X, Wang A, Cong Y, Wang X, Zhang T. Synthesis of Renewable Triketones, Diketones, and Jet-Fuel Range Cycloalkanes with 5-Hydroxymethylfurfural and Ketones. CHEMSUSCHEM 2017; 10:711-719. [PMID: 28052535 DOI: 10.1002/cssc.201601727] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 12/31/2016] [Indexed: 06/06/2023]
Abstract
A series of renewable C9 -C12 triketones with repeating [COCH2 CH2 ] units were synthesized in high carbon yields (ca. 90 %) by the aqueous-phase hydrogenation of the aldol-condensation products of 5-hydroxylmethylfurfural (HMF) and ketones over an Au/TiO2 catalyst. Compared with the reported routes, this new route has many advantages such as being environmentally friendly, having fewer steps, using a cheaper and reusable catalyst, etc. The triketones as obtained can be used as feedstocks in the production of conducting or semi-conducting polymers. Through a solvent-free intramolecular aldol condensation over solid-base catalysts, the triketones were selectively converted to diketones, which can be used as intermediates in the synthesis of useful chemicals or polymers. As another application, the tri- and diketones can also be utilized as precursors for the synthesis of jet-fuel range branched cycloalkanes with low freezing points (224-248 K) and high densities (ca. 0.81 g mL-1 ).
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Affiliation(s)
- Shanshan Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 10049, P. R. China
| | - Fang Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 10049, P. R. China
| | - Ning Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- iChEM, Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Wentao Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Xueru Sheng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 10049, P. R. China
| | - Aiqin Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- iChEM, Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Yu Cong
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Xiaodong Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Tao Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- iChEM, Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
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14
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Xu Z, Yan P, Li H, Liu K, Liu X, Jia S, Zhang ZC. Active Cp*Iridium(III) Complex with ortho-Hydroxyl Group Functionalized Bipyridine Ligand Containing an Electron-Donating Group for the Production of Diketone from 5-HMF. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00826] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Zhanwei Xu
- Dalian National Laboratory
for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, 116023 Dalian, China
| | - Peifang Yan
- Dalian National Laboratory
for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, 116023 Dalian, China
| | - Huixiang Li
- Dalian National Laboratory
for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, 116023 Dalian, China
| | - Kairui Liu
- Dalian National Laboratory
for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, 116023 Dalian, China
| | - Xiumei Liu
- Dalian National Laboratory
for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, 116023 Dalian, China
| | - Songyan Jia
- Dalian National Laboratory
for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, 116023 Dalian, China
| | - Z. Conrad Zhang
- Dalian National Laboratory
for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, 116023 Dalian, China
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Kotani S, Kai K, Shimoda Y, Hu H, Gao S, Sugiura M, Ogasawara M, Nakajima M. Concise Asymmetric Construction of C2 -symmetric 1,9-Diarylnonanoids Using a Hypervalent Silicon Complex: Total Synthesis of (-)-Ericanone. Chem Asian J 2016; 11:376-9. [PMID: 26610889 DOI: 10.1002/asia.201501080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 12/11/2022]
Abstract
By using a phosphine oxide-catalyzed enantioselective double aldol reaction, we achieved the concise construction of C2 -symmetric 1,9-diarylnonanoids, enabling the synthesis of (-)-ericanone from p-hydroxybenzaldehyde in 6 steps with 65 % overall yield. The enantioselective double aldol reaction is useful for establishing C2 -symmetric 1,9-diaryl-3,7-dihydroxy-5-nonanones with a single operation. Furthermore, the use of o-nosyl-protected p-hydroxybenzaldehyde and a 4,4'-disubstituted BINAP dioxide catalyst dramatically improved the reactivity and selectivity in the double aldol reaction, enabling the total synthesis of (-)-ericanone with high yield and with excellent enantiopurity.
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Affiliation(s)
- Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan. .,Priority Organization for Innovation and Excellence, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
| | - Kosuke Kai
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Yasushi Shimoda
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hao Hu
- Catalysis Research Center and Graduate School of Life Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, 001-0021, Japan
| | - Shen Gao
- Catalysis Research Center and Graduate School of Life Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, 001-0021, Japan
| | - Masaharu Sugiura
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Masamichi Ogasawara
- Catalysis Research Center and Graduate School of Life Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, 001-0021, Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
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16
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Enantioselective direct aldol reactions promoted by phosphine oxide aziridinyl phosphonate organocatalysts. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.10.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Kotani S, Sakamoto M, Osakama K, Nakajima M. A Sterically Congested α-Cyanoamine as a Cyanating Reagent: Cyanation of Acetals and Orthoesters. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501084] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Xu Z, Yan P, Xu W, Liu X, Xia Z, Chung B, Jia S, Zhang ZC. Hydrogenation/Hydrolytic Ring Opening of 5-HMF by Cp*-Iridium(III) Half-Sandwich Complexes for Bioketones Synthesis. ACS Catal 2014. [DOI: 10.1021/cs501874v] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Zhanwei Xu
- Dalian
National Lab for Clean
Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, China
| | - Peifang Yan
- Dalian
National Lab for Clean
Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, China
| | - Wenjuan Xu
- Dalian
National Lab for Clean
Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, China
| | - Xiumei Liu
- Dalian
National Lab for Clean
Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, China
| | - Zhi Xia
- Dalian
National Lab for Clean
Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, China
| | - Benjamin Chung
- Dalian
National Lab for Clean
Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, China
| | - Songyan Jia
- Dalian
National Lab for Clean
Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, China
| | - Z. Conrad Zhang
- Dalian
National Lab for Clean
Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023 Dalian, China
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