1
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Quan L, Xiao Y, Zhou A, Zhu X, Mao L, Wan J. Visible‐Light‐Promoted Tandem Oxyphosphorylation Etherification of α‐Diazoesters to Access Phosphoric Esters. ChemistrySelect 2023. [DOI: 10.1002/slct.202204778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Li‐Xia Quan
- College of Chemistry and Environment Science Shangrao Normal University Shangrao 334001 PR China
| | - Yi Xiao
- College of Chemistry and Environment Science Shangrao Normal University Shangrao 334001 PR China
| | - Anxi Zhou
- College of Chemistry and Environment Science Shangrao Normal University Shangrao 334001 PR China
| | - Xianhong Zhu
- College of Chemistry and Environment Science Shangrao Normal University Shangrao 334001 PR China
| | - Liu‐Liang Mao
- College of Chemistry and Environment Science Shangrao Normal University Shangrao 334001 PR China
| | - Jie‐Ping Wan
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 PR China
- International Innovation Center for Forest Chemicals and Materials Nanjing Forestry University Nanjing 210037 PR China
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2
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Kondoh A, Terada M. Synthesis of 2,2‐Disubstituted 2
H
‐Chromenes through Carbon‐Carbon Bond Formation Utilizing a [1,2]‐Phospha‐Brook Rearrangement under Brønsted Base Catalysis. Chemistry 2022; 28:e202201198. [DOI: 10.1002/chem.202201198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
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3
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Kondoh A, Hirozane T, Terada M. Formal Umpolung Addition of Phosphites to 2‐Azaaryl Ketones under Chiral Brønsted Base Catalysis: Enantioselective Protonation Utilizing [1,2]‐Phospha‐Brook Rearrangement. Chemistry 2022; 28:e202201240. [DOI: 10.1002/chem.202201240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Takayuki Hirozane
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
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4
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Lin Q, Zheng S, Chen L, Wu J, Li J, Liu P, Dong S, Liu X, Peng Q, Feng X. Catalytic Regio‐ and Enantioselective Protonation for the Synthesis of Chiral Allenes: Synergistic Effect of the Counterion and Water. Angew Chem Int Ed Engl 2022; 61:e202203650. [DOI: 10.1002/anie.202203650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Qianchi Lin
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Sujuan Zheng
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Laboratory of Biosensing and Molecular Recognition and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 China
| | - Long Chen
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Jin Wu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Jinzhao Li
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Peizhi Liu
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Laboratory of Biosensing and Molecular Recognition and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Qian Peng
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Laboratory of Biosensing and Molecular Recognition and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
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5
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Lin Q, Zheng S, Chen L, Wu J, Li J, Liu P, Dong S, Liu X, Peng Q, Feng X. Catalytic Regio‐ and Enantioselective Protonation for the Synthesis of Chiral Allenes: Synergistic Effect of the Counterion and Water. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qianchi Lin
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Sujuan Zheng
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Laboratory of Biosensing and Molecular Recognition and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 China
| | - Long Chen
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Jin Wu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Jinzhao Li
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Peizhi Liu
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Laboratory of Biosensing and Molecular Recognition and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Qian Peng
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Laboratory of Biosensing and Molecular Recognition and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
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6
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Cheibas C, Fincias N, Casaretto N, Garrec J, El Kaïm L. Passerini-Smiles Reaction of α-Ketophosphonates: Platform for Phospha-Brook/Smiles Embedded Cascades. Angew Chem Int Ed Engl 2022; 61:e202116249. [PMID: 35001479 DOI: 10.1002/anie.202116249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Indexed: 11/07/2022]
Abstract
The Passerini-Smiles reactions of α-ketophosphonates with nitrophenols has been used as a platform to observe complex cascades involving multiple Smiles transfers coupled with phospha-Brook rearrangement. When using 4-nitrophenols a rare 1,3-Truce-Smiles rearrangement is observed leading to diarylacetamide derivatives. 2-Nitro-derivatives lead to a completely different reactivity pattern that may be explained by a nitro to nitroso conversion followed by a σ-π metathesis. All mechanistic assumptions are confirmed by DFT calculations performed on both families of adducts. The potential of this work has been further demonstrated by the use of N-aryl α-ketoamides as alternative starting materials for these cascades as well as the disclosure of new aza-Nazarov access to hydroxy-indolones.
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Affiliation(s)
- Cristina Cheibas
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
| | - Nicolas Fincias
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM-UMR 9168), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Julian Garrec
- Unité Chimie et Procédés (UCP), ENSTA-Paris, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Laurent El Kaïm
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
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7
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Li QW, Zhang XY, Lu L, Wu ZQ, Li J, Li GZ, Sun K, Yang S, Yang B. TFAA/DMSO‐promoted fluorination of P(O)−H and P(O)−OH compounds: Compatible Access to Fluorophosphonates and Phosphonofluoridates. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | | | | | | | - Kai Sun
- Anyang Normal University CHINA
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8
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El Kaim L, Cheibas C, Fincias N, Casaretto N, Garrec J. Passerini‐Smiles Reaction of a‐Ketophosphonates: Platform for Phospha‐Brook/Smiles Embedded Cascades. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- laurent El Kaim
- Ecole Nationale Superieure de Techniques Avancees Chemistry department 828 Bd des mar�chaux 91120 Palaiseau FRANCE
| | - Cristina Cheibas
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
| | - Nicolas Fincias
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
| | | | - Julian Garrec
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
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9
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Feng Z, Zhang H, Ren X, Jiang C, Gao G, Wang T. Enantioselective Construction of Tertiary C(sp3)−P Bonds by Thiourea‐based Bifunctional Phosphonium Salt‐catalyzed Hydrophosphonylation of Ketone Compounds. ChemCatChem 2021. [DOI: 10.1002/cctc.202100799] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Zhenghuai Feng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Hongkui Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Xiaoyu Ren
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Chunhui Jiang
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology 2 Mengxi Road Zhenjiang 212003 P. R. China
| | - Guowei Gao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
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10
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Hashikawa Y, Okamoto S, Murata Y. Nonclassical Abramov Products Formed on Orifices of Cage-Opened C 60 Derivatives. Chemistry 2021; 27:4864-4868. [PMID: 33258190 DOI: 10.1002/chem.202004035] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/20/2020] [Indexed: 12/21/2022]
Abstract
By nucleophilic addition of phosphite P(OMe)3 to a cage-opened C60 derivative, α-hydrophosphate and enol phosphate were obtained as kinetic and thermodynamic products, respectively. Different from classical Abramov products bearing a phosphorus-carbon bond, these products have a phosphorus-oxygen bond. The observed anomaly originates from the fully conjugated π system, which significantly stabilizes zwitterionic intermediates bearing a phosphorus-oxygen bond. The thus formed enol phosphate was found to exhibit an intense absorption band that extended to 730 nm, reflecting the intramolecular charge-transfer transitions. We also report domino phosphorylation reactions, which gave a cage-opened C60 derivative bearing a direct P-C bond.
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Affiliation(s)
- Yoshifumi Hashikawa
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Shu Okamoto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yasujiro Murata
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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11
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Kondoh A, Terada M. Brønsted Base-Catalyzed Formal Reductive [3+2] Annulation of 4,4,4-Trifluorocrotonate and α-Iminoketones. Chemistry 2021; 27:585-588. [PMID: 32869872 DOI: 10.1002/chem.202002943] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/27/2020] [Indexed: 02/01/2023]
Abstract
A formal reductive [3+2] annulation of 4,4,4-trifluorocrotonate and α-iminoketones was developed under Brønsted base catalysis. A single phosphazene base efficiently catalyzes the one-pot tandem reaction involving two mechanistically different elementary processes, namely the chemoselective reduction of an imine moiety of α-iminoketones with thiols as the reductant and the subsequent intermolecular Michael addition of an enolate of α-aminoketones concomitant with lactam formation. This operationally simple method provides β-trifluoromethyl-substituted γ-lactams with a tetrasubstituted carbon as a single diastereomer.
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Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
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12
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Azzena U, Carraro M, Pisano L, Monticelli S, Bartolotta R, Pace V. Cyclopentyl Methyl Ether: An Elective Ecofriendly Ethereal Solvent in Classical and Modern Organic Chemistry. CHEMSUSCHEM 2019; 12:40-70. [PMID: 30246930 PMCID: PMC6391966 DOI: 10.1002/cssc.201801768] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/23/2018] [Indexed: 05/07/2023]
Abstract
Solvents represent one of the major contributions to the environmental impact of fine-chemical synthesis. As a result, the use of environmentally friendly solvents in widely employed reactions is a challenge of vast real interest in contemporary organic chemistry. Within this Review, a great variety of examples showing how cyclopentyl methyl ether has been established as particularly useful for this purpose are reported. Indeed, its low toxicity, high boiling point, low melting point, hydrophobicity, chemical stability towards a wide range of conditions, exceptional stability towards the abstraction of hydrogen atoms, relatively low latent heat of vaporization, and the ease with which it can be recovered and recycled enable its successful employment as a solvent in a wide range of synthetic applications, including organometallic chemistry, catalysis, biphasic reactions, oxidations, and radical reactions.
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Affiliation(s)
- Ugo Azzena
- Department of Chemistry and PharmacyUniversity of Sassarivia Vienna 2, I07100SassariItaly
| | - Massimo Carraro
- Department of Chemistry and PharmacyUniversity of Sassarivia Vienna 2, I07100SassariItaly
| | - Luisa Pisano
- Department of Chemistry and PharmacyUniversity of Sassarivia Vienna 2, I07100SassariItaly
| | - Serena Monticelli
- Department of Pharmaceutical ChemistryUniversity of ViennaAlthanstrasse 141090ViennaAustria
| | - Roberta Bartolotta
- Department of Pharmaceutical ChemistryUniversity of ViennaAlthanstrasse 141090ViennaAustria
| | - Vittorio Pace
- Department of Pharmaceutical ChemistryUniversity of ViennaAlthanstrasse 141090ViennaAustria
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13
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Kondoh A, Iino A, Ishikawa S, Aoki T, Terada M. Efficient Synthesis of Polysubstituted Pyrroles Based on [3+2] Cycloaddition Strategy Utilizing [1,2]‐Phospha‐Brook Rearrangement under Brønsted Base Catalysis. Chemistry 2018; 24:15246-15253. [DOI: 10.1002/chem.201803809] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 08/16/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant MoleculesGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Akio Iino
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Sho Ishikawa
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Takuma Aoki
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
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14
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Kondoh A, Aoki T, Terada M. Organocatalytic Arylation of α-Ketoesters Based on Umpolung Strategy: Phosphazene-Catalyzed SN
Ar Reaction Utilizing [1,2]-Phospha-Brook Rearrangement. Chemistry 2018; 24:13110-13113. [DOI: 10.1002/chem.201803218] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules; Graduate School of Science; Tohoku University; Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Takuma Aoki
- Department of Chemistry; Graduate School of Science; Tohoku University; Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of Chemistry; Graduate School of Science; Tohoku University; Aramaki Aoba-ku Sendai 980-8578 Japan
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15
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Kondoh A, Terada M. Brønsted Base-Catalyzed Umpolung Intramolecular Cyclization of Alkynyl Imines. Chemistry 2018; 24:3998-4001. [DOI: 10.1002/chem.201800219] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Indexed: 01/16/2023]
Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules, Graduate School of Science; Tohoku University, Aramaki, Aoba-ku; Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science; Tohoku University, Aramaki, Aoba-ku; Sendai 980-8578 Japan
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16
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Kondoh A, Aoki T, Terada M. Generation and Application of Homoenolate Equivalents Utilizing [1,2]-Phospha-Brook Rearrangement under Brønsted Base Catalysis. Chemistry 2017; 23:2769-2773. [DOI: 10.1002/chem.201605673] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules, Graduate School of Science; Tohoku University; Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Takuma Aoki
- Department of Chemistry, Graduate School of Science; Tohoku University; Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Research and Analytical Center for Giant Molecules, Graduate School of Science; Tohoku University; Aramaki, Aoba-ku Sendai 980-8578 Japan
- Department of Chemistry, Graduate School of Science; Tohoku University; Aramaki, Aoba-ku Sendai 980-8578 Japan
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17
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Li Q, Chen T, Xu Q, Han LB. Rhodium- and Iridium-Catalyzed Asymmetric Addition of Optically PureP-ChiralH-Phosphinates to Aldehydes Leading to Optically Active α-Hydroxyphosphinates. Chemistry 2016; 22:6213-7. [DOI: 10.1002/chem.201600115] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Qiang Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha Hunan 410081 China
| | - Tieqiao Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha Hunan 410081 China
| | - Qing Xu
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou, Zhejiang 325035 China
| | - Li-Biao Han
- National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Ibaraki 305-8565 Japan
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18
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Kondoh A, Aoki T, Terada M. Synthesis of Phenanthrene Derivatives by Intramolecular Cyclization Utilizing the [1,2]-Phospha-Brook Rearrangement Catalyzed by a Brønsted Base. Chemistry 2015; 21:12577-80. [DOI: 10.1002/chem.201501377] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Indexed: 11/08/2022]
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19
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Sun X, Song Z, Li H, Sun C. [1,4]‐S‐ to O‐Silyl Migration: Multicomponent Synthesis of α‐Thioketones through Chemoselective Transformation of Esters to Ketones with Organolithium Reagents. Chemistry 2013; 19:17589-94. [PMID: 24243592 DOI: 10.1002/chem.201303459] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Indexed: 02/05/2023]
Affiliation(s)
- Xianwei Sun
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, 610041 (P.R. China)
| | - Zhenlei Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, 610041 (P.R. China)
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 (P.R. China)
| | - Hongze Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, 610041 (P.R. China)
| | - Changzheng Sun
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, 610041 (P.R. China)
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20
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Yanagisawa A, Sugita T, Yoshida K. Enantioselective Protonation of Alkenyl Trifluoroacetates Catalyzed by Chiral Tin Methoxide. Chemistry 2013; 19:16200-3. [DOI: 10.1002/chem.201302975] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Indexed: 11/08/2022]
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21
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Fu N, Zhang L, Luo S, Cheng JP. Chiral primary-amine-catalyzed conjugate addition to α-substituted vinyl ketones/aldehydes: divergent stereocontrol modes on enamine protonation. Chemistry 2013; 19:15669-81. [PMID: 24114835 DOI: 10.1002/chem.201302056] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/23/2013] [Indexed: 11/10/2022]
Abstract
Enantioselective protonation with a catalytic enamine intermediate represents a challenging, yet fundamentally important process for the synthesis of α-chiral carbonyls. We describe herein chiral primary-amine-catalyzed conjugate additions of indoles to both α-substituted acroleins and vinyl ketones. These reactions feature enamine protonation as the stereogenic step. A simple primary-tertiary vicinal diamine 1 with trifluoromethanesulfonic acid (TfOH) was found to enable both of the reactions of acroleins and vinyl ketones with good activity and high enantioselectivity. Detailed mechanistic studies reveal that these reactions are rate-limiting in iminium formation and they all involve a uniform H2 O/acid-bridged proton transfer in the stereogenic steps but divergent stereocontrol modes for the protonation stereoselectivity. For the reactions of α-branched acroleins, facial selections on H2 O-bridged protonation determine the enantioselectivity, which is enhanced by an OH⋅⋅⋅π interaction with indole as uncovered by DFT calculations. On the other hand, the stereoselectivity of the reactions with vinyl ketones is controlled according to the Curtin-Hammett principle in the CC bond-formation step, which precedes a highly stereospecific enamine protonation.
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Affiliation(s)
- Niankai Fu
- 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), Fax: (+86) 10-6255-4449
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Hatano M, Horibe T, Ishihara K. Chiral Magnesium(II) Binaphtholates as Cooperative Brønsted/Lewis Acid-Base Catalysts for the Highly Enantioselective Addition of Phosphorus Nucleophiles to α,β-Unsaturated Esters and Ketones. Angew Chem Int Ed Engl 2013; 52:4549-53. [DOI: 10.1002/anie.201300938] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Indexed: 11/05/2022]
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Hatano M, Horibe T, Ishihara K. Chiral Magnesium(II) Binaphtholates as Cooperative Brønsted/Lewis Acid-Base Catalysts for the Highly Enantioselective Addition of Phosphorus Nucleophiles to α,β-Unsaturated Esters and Ketones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300938] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Corbett MT, Uraguchi D, Ooi T, Johnson JS. Base-catalyzed direct aldolization of α-alkyl-α-hydroxy trialkyl phosphonoacetates. Angew Chem Int Ed Engl 2012; 51:4685-9. [PMID: 22474004 DOI: 10.1002/anie.201200559] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Indexed: 11/12/2022]
Affiliation(s)
- Michael T Corbett
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Corbett MT, Uraguchi D, Ooi T, Johnson JS. Base-Catalyzed Direct Aldolization of α-Alkyl-α-Hydroxy Trialkyl Phosphonoacetates. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200559] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ohara M, Nakamura S, Shibata N. Direct Enantioselective Three-Component Kabachnik-Fields Reaction Catalyzed by Chiral Bis(imidazoline)-Zinc(II) Catalysts. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100482] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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