1
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Li Y, Dagousset G, Magnier E, Pégot B. From perfluoroalkyl aryl sulfoxides to ortho thioethers. Beilstein J Org Chem 2024; 20:2108-2113. [PMID: 39189003 PMCID: PMC11346307 DOI: 10.3762/bjoc.20.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Accepted: 08/02/2024] [Indexed: 08/28/2024] Open
Abstract
Access to original ortho thioether derivatives was achieved through a [3,3]-rearrangement in a one-pot two-step protocol. Several aryl-SCF3 compounds are reported by variation of the nitrile or of the trifluoroalkyl sulfoxide starting material. The variation of the perfluoroalkyl chain was also possible.
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Affiliation(s)
- Yang Li
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
| | - Guillaume Dagousset
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
| | - Emmanuel Magnier
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
| | - Bruce Pégot
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
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2
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Wakabayashi R, Wang S, Kurogi T, Yorimitsu H. Arylation of benzazoles at the 4 positions by activation of their 2-methylsulfinyl groups. Chem Commun (Camb) 2024; 60:6166-6169. [PMID: 38804671 DOI: 10.1039/d4cc01918k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Treatment of 2-methylsulfinylbenzazoles with triflic anhydride in the presence of phenols yields the corresponding 4-(p-hydroxyphenyl)-2-methylsulfanylbenzazoles. This regioselective dehydrative C-H/C-H coupling arylation represents a rare example of functionalizations on the benzene rings of benzo-fused azoles.
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Affiliation(s)
- Ryota Wakabayashi
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Shuo Wang
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Takashi Kurogi
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Hideki Yorimitsu
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
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3
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Ye S, Wang H, Liang G, Hu Z, Wan K, Zhang L, Peng B. ortho-Cyanomethylation of aryl fluoroalkyl sulfoxides via a sulfonium-Claisen rearrangement. Org Biomol Chem 2024; 22:1495-1499. [PMID: 38293848 DOI: 10.1039/d3ob02102e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
We hereby report the ortho-cyanomethylation of aryl fluoroalkyl sulfoxides with acetonitrile through a sulfonium-Claisen-type rearrangement. This reaction enables the incorporation of two valuable functional groups, such as the cyanomethyl group and the fluoroalkylthio group, into arenes. Remarkably, fluoroalkylthio groups, such as SCFH2 and SCF2H, bearing active hydrogen, are well tolerated by the reaction. The success of the reaction relies on the use of an excess amount of acetonitrile and the electronegative effect of fluoroalkyl substituents, both of which promote the electrophilic assembly of sulfoxides with acetonitrile. Consequently, the sulfonium-Claisen rearrangement reaction tolerates a wide variety of fluoroalkyl sulfoxides bearing functional groups including halides, nitriles, ketones, sulfones, and amides, which are appealing for subsequent elaboration and exploration.
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Affiliation(s)
- Sheng Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
| | - Huanhuan Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
| | - Guoqing Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
| | - Zhengkai Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
| | - Kun Wan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
| | - Lei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
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4
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Kaiser M, Steinacher M, Lukas F, Gaertner P. Carpe diene! Europium-catalyzed [3,3] and [5,5] rearrangements of aryl-pentadienyl ethers. RSC Adv 2023; 13:32077-32082. [PMID: 37920755 PMCID: PMC10618941 DOI: 10.1039/d3ra05641d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/24/2023] [Indexed: 11/04/2023] Open
Abstract
A general protocol for the europium-catalyzed rearrangement of aryl-pentadienyl-ethers is described. The mode of rearrangement and product formation in this reaction was solely determined by the aryl substituent para to the phenol. If the para-position is occupied by a substituent, the substrate undergoes a [3,3] rearrangement to the ortho-position to form a prochiral branched diene. In turn, a free para-position in the starting material allows the reaction to proceed via a [5,5] rearrangement and leads to a linear conjugated diene product. The severely underdeveloped and synthetically valuable [5,5] rearrangement was investigated in terms of scope and mechanism.
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Affiliation(s)
- Maximilian Kaiser
- Institute of Applied Synthetic Chemistry, Technische Universität Wien Getreidemarkt 9/163 1060 Wien Austria
| | - Michael Steinacher
- Institute of Applied Synthetic Chemistry, Technische Universität Wien Getreidemarkt 9/163 1060 Wien Austria
| | - Florian Lukas
- Institute of Applied Synthetic Chemistry, Technische Universität Wien Getreidemarkt 9/163 1060 Wien Austria
| | - Peter Gaertner
- Institute of Applied Synthetic Chemistry, Technische Universität Wien Getreidemarkt 9/163 1060 Wien Austria
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5
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Bhat MY, Padder AH, Gupta R, Ahmed QN. Tf 2O-Promoted Regioselective Heteronucleophilic Ring-Opening Approaches of Tetrahydrofuran. J Org Chem 2023; 88:14323-14338. [PMID: 37817465 DOI: 10.1021/acs.joc.3c01065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
The ring-opening functionalization strategy in tetrahydrofuran (THF) represents an ideal approach to access different valuable structures. Herein, we report different operationally simple, efficient, unique, and practical regioselective heteronucleophilic ring-opening strategies for the THF system. Tf2O, which is a strong electrophilic activator, was found to generate a THF triflate intermediate that triggers the nucleophilicity of nitriles (Nu1) and led to regioselective ring opening in the presence of different nucleophiles (Nu2). Furthermore, the synthesis of different heteronucleophilic ring-opening dimerization products was attributed to the nucleophilicity of Nu2. We also demonstrated that use of borane-tetrahydrofuran (BTHF) can achieve challenging hydride addition in a similar manner.
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Affiliation(s)
- Mohammad Yaqoob Bhat
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ashiq Hussain Padder
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Raman Gupta
- Department of Chemistry, Govt. College of Engineering and Technology, Jammu 181122, India
| | - Qazi Naveed Ahmed
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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6
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Liang Y, Huang H, Huang N, Liao L, Zhao X. Catalytic Enantioselective Construction of Chiral γ-Azido Nitriles through Nitrile Group-Promoted Electrophilic Reaction of Alkenes. Org Lett 2023; 25:6757-6762. [PMID: 37656917 DOI: 10.1021/acs.orglett.3c02650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
An efficient approach for the construction of enantioenriched γ-azido nitriles through the chiral sulfide-catalyzed asymmetric electrophilic thioazidation of allylic nitriles is disclosed. A wide range of electron-deficient and -rich aryl, heterocyclic aryl, and alkyl substituents are suitable on the substrates of allylic nitriles. The regio-, enantio-, and diastereoselectivities of the reactions are excellent. As versatile platform molecules, the obtained chiral γ-azido nitriles can be easily converted into high-value-added chiral molecules that are not easily accessed by other methods. Control experiments revealed that the allylic nitrile group is important for control of the reactivity and enantioselectivity of the reaction leading to a broad substrate scope.
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Affiliation(s)
- Yaoyu Liang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Hongtai Huang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Nan Huang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Lihao Liao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Xiaodan Zhao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
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7
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Hu M, Liang Y, Ru L, Ye S, Zhang L, Huang X, Bao M, Kong L, Peng B. Defluorinative Multi-Functionalization of Fluoroaryl Sulfoxides Enabled by Fluorine-Assisted Temporary Dearomatization. Angew Chem Int Ed Engl 2023; 62:e202306914. [PMID: 37455262 DOI: 10.1002/anie.202306914] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023]
Abstract
Owing to its unique physical properties, fluorine is often used to open up new reaction channels. In this report, we establish a cooperation of [5,5]-rearrangement and fluorine-assisted temporary dearomatization for arene multi-functionalization. Specifically, the [5,5]-rearrangement of fluoroaryl sulfoxides with β,γ-unsaturated nitriles generates an intriguing dearomatized sulfonium species which is short-lived but exhibits unusually high electrophilicity and thus can be instantly trapped by nucleophiles and dienes at a remarkably low temperature (-95 °C) to produce four types of valuable multi-functionalized benzenes, respectively, involving appealing processes of defluorination, desulfurization, and sulfur shift. Mechanistic studies indicate that the use of fluorine on arenes not only circumvents the generally inevitable [3,3]-rearrangement but also impedes the undesired rearomatization process, thus provides a precious space for constructing and elaborating the temporarily dearomatized fluorinated sulfonium species.
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Affiliation(s)
- Mengjie Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, China
| | - Yuchen Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Liying Ru
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Sheng Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Lei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Xin Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University, Changsha, 410081, China
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8
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Bisht R, Popescu MV, He Z, Ibrahim AM, Crisenza GEM, Paton RS, Procter DJ. Metal-Free Arylation of Benzothiophenes at C4 by Activation as their Benzothiophene S-Oxides. Angew Chem Int Ed Engl 2023; 62:e202302418. [PMID: 37000422 PMCID: PMC10953450 DOI: 10.1002/anie.202302418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 04/01/2023]
Abstract
Benzothiophenes, activated by oxidation to the corresponding S-oxides, undergo C-H/C-H-type coupling with phenols to give C4 arylation products. While an electron-withdrawing group at C3 of the benzothiophene is important, the process operates without a directing group and a metal catalyst, thus rendering it compatible with sensitive functionalities-e.g. halides and formyl groups. Quantum chemical calculations suggest a formal stepwise mechanism involving heterolytic cleavage of an aryloxysulfur species to give a π-complex of the corresponding benzothiophene and a phenoxonium cation. Subsequent addition of the phenoxonium cation to the C4 position of the benzothiophene is favored over the addition to C3; Fukui functions predict that the major regioisomer is formed at the more electron-rich position between C3 and C4. Varied selective manipulation of the benzothiophene products showcase the synthetic utility of the metal-free arylation process.
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Affiliation(s)
- Ranjana Bisht
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Mihai V. Popescu
- Department of ChemistryColorado State UniversityCenter AveFort CollinsCO80523USA
| | - Zhen He
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Ameer M. Ibrahim
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | | | - Robert S. Paton
- Department of ChemistryColorado State UniversityCenter AveFort CollinsCO80523USA
| | - David J. Procter
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
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9
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Wang L, Zhou Y, Su Z, Zhang F, Cao W, Liu X, Feng X. [3,3]-Sigmatropic Rearrangements of Naphthyl 1-Propargyl Ethers: para-Propargylation and Catalytic Asymmetric Dearomatization. Angew Chem Int Ed Engl 2022; 61:e202211785. [PMID: 36317655 DOI: 10.1002/anie.202211785] [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: 08/10/2022] [Indexed: 11/06/2022]
Abstract
The para-Claisen rearrangement of aryl 1-propargyl ethers involves two-step [3,3]-sigmatropic rearrangements and dearomatization process, which has high activation barriers and is of challenge. Here we discovered thermal para-Claisen rearrangement of naphthyl 1-propargyl ethers, and it enabled the formation of formal para-C-H propargylation products upon rearomatization. Chirality transfer occurred if optically active propargyl ethers were employed, leading to the construction of aryl/propargyl-containing stereogenic centers. Moreover, catalytic asymmetric dearomatization of naphthyl 1-propargyl ethers with different substitution at para-position gave access to benzocyclohexenones bearing all-carbon quaternary stereocenters. The reaction was accelerated by a chiral N,N'-dioxide/Co(OTf)2 complex catalyst to achieve high yields (up to 98 %) and high enantioselectivities (up to 93 % ee). The DFT calculations and experimental results provided important clues to clarify the para-Claisen rearrangement process as well as the chiral induction and remote delivery.
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Affiliation(s)
- Lifeng Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Fengcai Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Weidi Cao
- 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
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
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10
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Wang L, Zhou Y, Su Z, Zhang F, Cao W, Liu X, Feng X. [3,3]‐Sigmatropic Rearrangements of Naphthyl 1‐Propargyl Ethers:
para
‐Propargylation and Catalytic Asymmetric Dearomatization. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Lifeng Wang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Fengcai Zhang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Weidi Cao
- 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
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
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11
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Chen Z, Tan M, Shan C, Yuan X, Chen L, Shi J, Lan Y, Li Y. Aryne 1,4‐Disubstitution and Remote Diastereoselective 1,2,4‐Trisubstitution via a Nucleophilic Annulation‐[5,5]‐Sigmatropic Rearrangement Process. Angew Chem Int Ed Engl 2022; 61:e202212160. [DOI: 10.1002/anie.202212160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Zhonghong Chen
- College of Chemistry Jilin University Changchun 130012 P. R. China
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Min Tan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- College of Chemistry Chongqing Normal University Chongqing 401331 P. R. China
| | - Xiaoling Yuan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Liyuan Chen
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou Henan, 450001 P. R. China
| | - Yang Li
- College of Chemistry Jilin University Changchun 130012 P. R. China
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
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12
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Li X, Li Y, Yang J, Shi H, Ai Z, Han C, He J, Du Y. Synthesis of 3-SCF 2H-/3-SCF 3-chromones via Interrupted Pummerer Reaction/Intramolecular Cyclization Mediated by Difluoromethyl or Trifluoromethyl Sulfoxide and Tf 2O. Org Lett 2022; 24:7216-7221. [PMID: 36148991 DOI: 10.1021/acs.orglett.2c03017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of alkynyl aryl ketones bearing an o-methoxy group with difluoromethyl sulfoxide in the presence of Tf2O was found to conveniently afford the corresponding 3-SCF2H-substituted chromones. The combining use of difluoromethyl sulfoxide/Tf2O could represent the first reagents system that can introduce the biologically important SCF2H moiety under base-free conditions via an interrupted Pummerer reaction. The same protocol could also be applied to the synthesis of 3-SCF3-substituted chromones by replacing difluoromethyl sulfoxide with trifluoromethyl sulfoxide and CH3CN with toluene.
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Affiliation(s)
- Xuemin Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yue Li
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Nano-biotechnology, Yanshan University, Qinhuangdao 066004, P.R. China
| | - Jingyue Yang
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Nano-biotechnology, Yanshan University, Qinhuangdao 066004, P.R. China
| | - Haofeng Shi
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Zhenkang Ai
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Chi Han
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Jiaxin He
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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13
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Hu M, Liu Y, Liang Y, Dong T, Kong L, Bao M, Wang ZX, Peng B. Dearomative di- and trifunctionalization of aryl sulfoxides via [5,5]-rearrangement. Nat Commun 2022; 13:4719. [PMID: 35953490 PMCID: PMC9372148 DOI: 10.1038/s41467-022-32426-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 07/27/2022] [Indexed: 11/09/2022] Open
Abstract
Aromatic [5,5]-rearrangement can in principle be an ideal protocol to access dearomative compounds. However, the lack of competent [5,5]-rearrangement impedes the advance of the protocol. In this Article, we showcase the power of [5,5]-rearrangement recently developed in our laboratory for constructing an intriguing dearomative sulfonium specie which features versatile and unique reactivities to perform nucleophilic 1,2- and 1,4-addition and cyclization, thus achieving dearomative di- and trifunctionalization of easily accessible aryl sulfoxides. Impressively, the dearomatization products can be readily converted to sulfur-removed cyclohexenones, naphthalenones, bicyclic cyclohexadienones, and multi-substituted benzenes. Mechanistic studies shed light on the key intermediates and the remarkable chemo-, regio- and stereoselectivities of the reactions.
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Affiliation(s)
- Mengjie Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, China.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, China
| | - Yanping Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, China
| | - Yuchen Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, China
| | - Taotao Dong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, China
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, China.
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, China.
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14
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Liang Y, Peng B. Revisiting Aromatic Claisen Rearrangement Using Unstable Aryl Sulfonium/Iodonium Species: The Strategy of Breaking Up the Whole into Parts. Acc Chem Res 2022; 55:2103-2122. [PMID: 35861672 DOI: 10.1021/acs.accounts.2c00263] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
ConspectusSince Ludwig Claisen's discovery of the sigmatropic rearrangement of allyl aryl ethers in 1912, aromatic Claisen rearrangement has continuously attracted the attention of both experimental and theoretical chemists. Over more than a century of growth, this protocol has proven to be a practical and powerful synthetic tool in many aspects. However, the reaction scope has long been limited to aryl ethers and their S or N analogs until the serendipitous discovery of aromatic iodonium-Claisen rearrangement by Oh et al. in 1988 and the development of aromatic sulfonium-Claisen rearrangement by Kita et al. in 2004. Unlike traditional Claisen rearrangements, these hypervalent-bonding-based Claisen-type rearrangements can be performed by simply mixing electrophilically activated aryl sulfoxides/iodanes with certain nucleophiles to directly deliver rearrangement products. In addition to the simple operation, remarkable features, such as readily available substrates, valuable products and intriguing rearrangement patterns, have led to a dramatic resurgence of this rearrangement chemistry.In this Account, we summarize our recent works on developing new aromatic rearrangement modes using sulfonium/iodonium reagents. Interestingly, the program started with an accidental discovery that aryl sulfoxides could be coupled with alkyl nitriles in the presence of Tf2O and base. Mechanistic studies reveal that the reaction proceeds in three major steps, including the Tf2O-triggered assembly of both coupling partners, base-promoted deprotonation of in situ-generated aryl sulfonium-imine species leading to a key rearrangement precursor called aryl sulfonium-ketenimine species, and subsequent facile and rapid [3,3]-rearrangement. On the basis of the mechanistic underpinning, we divided the one-step operation into two steps called the "assembly/deprotonation" protocol for constructing unstable rearrangement precursors. Most notably, the switch from the commonly used one-step to mechanism-based multiple-step manipulation, which can be termed "breaking up the whole into parts", not only enables the independent control of each step of the reaction, thus significantly expanding the accessible synthetic scope, but also raises opportunities for developing new rearrangement patterns. For example, the "assembly/deprotonation" protocol has also been applied to the development of [5,5]-rearrangement of aryl sulfoxides and the asymmetric rearrangement of aryl iodanes, thus enabling the unprecedented regio- and stereocontrol of the rearrangement process. Furthermore, the "breaking up the whole into parts" thinking triggered us to merge the Morita-Baylis-Hillman (MBH) reaction into the rearrangement process to accomplish Z-selective MBH-type [3,3]-rearrangement of α,β-unsaturated nitriles and E-selective MBH-type [3,3]-rearrangement of α,β-unsaturated 2-oxazolines, which expands the scope of rearrangement partners to include α,β-unsaturated carbonyls. In addition, the impressive rapidity of the rearrangement process found in our initial discovery has also been recognized as a congestion-acceleration effect, which was further utilized to forge the rapid ortho-cyanoalkylative rearrangement of aryl iodanes, and thus leading to the first dearomatization of aryl iodanes. We anticipate that our protocols and ideas behind the methods will be complementary to the traditional thinking of the aromatic Claisen rearrangement.
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Affiliation(s)
- Yuchen Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, 688 Yingbin Road, Jinhua321004, China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, 688 Yingbin Road, Jinhua321004, China
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15
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Wang X, Dong ZB. A Recent Progress for the Synthesis of Thioester Compounds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200452] [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)
- Xi Wang
- Wuhan Institute of Technology School of Chemistry and Environmental Engineering 430205 Wuhan CHINA
| | - Zhi-Bing Dong
- Wuhan Institute of Technology School of Chemistry and Environmental Engeering Liufang Campus, No. 206, Guanggu 1st Road 430205 Wuhan CHINA
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16
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Zhang Q, Liang Y, Li R, Huang Z, Kong L, Du P, Peng B. Sulfur(iv)-mediated umpolung α-heterofunctionalization of 2-oxazolines. Chem Sci 2022; 13:5164-5170. [PMID: 35655558 PMCID: PMC9093176 DOI: 10.1039/d2sc00476c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/08/2022] [Indexed: 11/21/2022] Open
Abstract
The α-umpolung of carbonyl compounds significantly expands the boundaries of traditional carbonyl chemistry. Despite various umpolung methods available today, reversing the inherent reactivity of carbonyls still remains a substantial challenge. In this article, we report the first use of sulfonium salts, in lieu of well-established hypervalent iodines, for the carbonyl umpolung event. The protocol enables the incorporation of a wide variety of heteroatom nucleophiles into the α-carbon of 2-oxazolines. The success of this investigation hinges on the following factors: (1) the use of sulfoxides, which are abundant, structurally diverse and tunable, and easily accessible, ensures the identification of a superior oxidant namely phenoxathiin sulfoxide for the umpolung reaction; (2) the "assembly/deprotonation" protocol previously developed for rearrangement reactions in our laboratory was successfully applied here for the construction of α-umpoled 2-oxazolines.
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Affiliation(s)
- Qifeng Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Yuchen Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Ruiqi Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Ziyi Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Peng Du
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
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17
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Kang JY, Huang H. Triflic Anhydride (Tf2O)-Activated Transformations of Amides, Sulfoxides and Phosphorus Oxides via Nucleophilic Trapping. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1679-8205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractTrifluoromethanesulfonic anhydride (Tf2O) is utilized as a strong electrophilic activator in a wide range of applications in synthetic organic chemistry, leading to the transient generation of a triflate intermediate. This versatile triflate intermediate undergoes nucleophilic trapping with diverse nucleophiles to yield novel compounds. In this review, we describe the features and applications of triflic anhydride in organic synthesis reported in the past decade, especially in amide, sulfoxide, and phosphorus oxide chemistry through electrophilic activation. A plausible mechanistic pathway for each important reaction is also discussed.1 Introduction2 Amide Chemistry2.1 Carbon Nucleophiles2.2 Hydrogen Nucleophiles2.3 Nitrogen Nucleophiles2.4 Oxygen and Sulfur Nucleophiles2.5 hosphorus Nucleophiles2.6 A Vilsmeier-Type Reagent2.7 Umpolung Reactivity in Amides3 Sulfoxide Chemistry3.1 Oxygen Nucleophiles3.2 Carbon Nucleophiles3.3 Nitrogen Nucleophiles3.4 Thionium Reagents4 Phosphorus Chemistry4.1 Hendrickson’s Reagent4.2 Diaryl Phosphine Oxides4.3 Phosphonates, Phosphates and Phosphinates5 Conclusion and Outlook
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Affiliation(s)
- Jun Yong Kang
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University
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18
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Wang J, Liu M, Zhang Y, Bi G, Zhao Y, Yang K, Huang X. Switchable Synthesis of Sulfoxides and α-Alkoxy-β-ketothioethers Regulated by Temperature in a Selectfluor-Methanol System. J Org Chem 2021; 86:14404-14419. [PMID: 34643084 DOI: 10.1021/acs.joc.1c01146] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A switchable and benign protocol for chemoselective synthesis of sulfoxides and α-alkoxy-β-ketothioethers has been developed. It was determined that various thiophenols and alkenes/alkynes are compatible to realize the target compounds from a medium to a high yield by regulating the reaction temperature. In particular, methanol not only served as a solvent but also participated in the reaction process as a hydrogen donor. In this study, Selectfluor has been proved to be an efficient multifunctional reagent in the reaction system.
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Affiliation(s)
- Jiateng Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China
| | - Mengxia Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China
| | - Yue Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China
| | - Gehua Bi
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China
| | - Yi Zhao
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China
| | - Kai Yang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China
| | - Xin Huang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China
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19
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Hu C, Farshadfar K, Dietl MC, Cervantes-Reyes A, Wang T, Adak T, Rudolph M, Rominger F, Li J, Ariafard A, Hashmi ASK. Gold-Catalyzed [5,5]-Rearrangement. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01108] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Chao Hu
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Kaveh Farshadfar
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran 1469669191, Iran
| | - Martin C. Dietl
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Alejandro Cervantes-Reyes
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Tao Wang
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Tapas Adak
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Jun Li
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Alireza Ariafard
- School of Natural Sciences (Chemistry), University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
- Chemistry Department, Faculty of Science, King Abdulaziz University (KAU), Jeddah 21589, Saudi Arabia
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20
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Zhang L, Bao W, Liang Y, Pan W, Li D, Kong L, Wang ZX, Peng B. Morita-Baylis-Hillman-Type [3,3]-Rearrangement: Switching from Z- to E-Selective α-Arylation by New Rearrangement Partners. Angew Chem Int Ed Engl 2021; 60:11414-11422. [PMID: 33644970 DOI: 10.1002/anie.202100497] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/25/2021] [Indexed: 01/03/2023]
Abstract
α-aryl α,β-unsaturated carbonyls represent an important class of derivatizable synthetic intermediates, however, the synthesis of such compounds still remains a challenge. Recently, we showcased a novel Z-selective α-arylation of α,β-unsaturated nitriles with aryl sulfoxides via [3,3]-rearrangement involving an Morita-Baylis-Hillman (MBH) process. Herein, we demonstrate the feasibility of reversing the stereoselectivity of such MBH-type [3,3]-rearrangement by switching to a new pair of rearrangement partners consisting of aryl iodanes and α,β-unsaturated oxazolines. As a result, the two protocols complement each other in approaching E- or Z-α-aryl α,β-unsaturated carbonyl derivatives. Mechanistic studies reveal a possible reaction pathway and provide an explanation for the opposite stereoselectivities.
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Affiliation(s)
- Lei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Wangzhen Bao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Yuchen Liang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenjing Pan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Dongyang Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
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21
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Zhang L, Bao W, Liang Y, Pan W, Li D, Kong L, Wang Z, Peng B. Morita–Baylis–Hillman‐Type [3,3]‐Rearrangement: Switching from
Z
‐ to
E
‐Selective α‐Arylation by New Rearrangement Partners. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Lei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Wangzhen Bao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Yuchen Liang
- School of Chemical Sciences University of the Chinese Academy of Sciences Beijing 100049 China
| | - Wenjing Pan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Dongyang Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Zhi‐Xiang Wang
- School of Chemical Sciences University of the Chinese Academy of Sciences Beijing 100049 China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
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22
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Liu Q, Li XB, Jiang M, Liu ZJ, Liu JT. Synthesis of α-alkynyl perfluoroalkyl sulfoxides by the reaction of terminal alkynes and perfluoroalkanesulfinyl chlorides. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.131994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Cao T, Shi Q, Zhu S. Benzene-Free Synthesis of Multisubstituted Catechol via Oxidative Dearomatic Reorganization. Org Lett 2021; 23:1411-1415. [PMID: 33560130 DOI: 10.1021/acs.orglett.1c00071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A benzene-free synthesis of multisubstituted catechol via an oxidative dearomatic reorganization is reported. This reaction tolerated a wide spectrum of functionalities, which could be applied in the synthesis of an electron-deficient arene-conjugated catechol that is difficult to access via biomimetic oxidative coupling. In addition, a diversification-oriented transformation that leveraged the versatile catechol afforded a series of functionality-rich products.
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Affiliation(s)
- Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Qiu Shi
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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24
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Chen M, Liang Y, Dong T, Liang W, Liu Y, Zhang Y, Huang X, Kong L, Wang ZX, Peng B. Z-Selective α-Arylation of α,β-Unsaturated Nitriles via [3,3]-Sigmatropic Rearrangement. Angew Chem Int Ed Engl 2021; 60:2339-2345. [PMID: 33017503 DOI: 10.1002/anie.202010740] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/28/2020] [Indexed: 12/19/2022]
Abstract
The Morita-Baylis-Hillman (MBH) reaction and [3, 3]-sigmatropic rearrangement are two paradigms in organic synthesis. We have merged the two types of reactions to achieve [3,3]-rearrangement of aryl sulfoxides with α,β-unsaturated nitriles. The reaction was achieved by sequentially treating both coupling partners with electrophilic activator (Tf2 O) and base, offering an effective approach to prepare synthetically versatile α-aryl α,β-unsaturated nitriles with Z-selectivity through direct α-C-H arylation of unmodified α,β-unsaturated nitriles. The control experiments and DFT calculations support a four-stage reaction sequence, including the assembly of Tf2 O activated aryl sulfoxide with α,β-unsaturated nitrile, MBH-like Lewis base addition, [3,3]-rearrangement, and E1cB-elimination. Among these stages, the Lewis base addition is diastereoselective and E1cB-elimination is cis-selective, which could account for the remarkable Z-selectivity of the reaction.
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Affiliation(s)
- Mengyuan Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Yuchen Liang
- School of Chemical Science, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Taotao Dong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Weijian Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Yanping Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Yage Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Xin Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Zhi-Xiang Wang
- School of Chemical Science, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
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25
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Higuchi K, Tayu M. The Interrupted Pummerer Reaction: Design of Sulfoxides and Their Utility in Organic Synthesis. HETEROCYCLES 2021. [DOI: 10.3987/rev-20-935] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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26
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Metal-free synthesis of biaryls from aryl sulfoxides and sulfonanilides via sigmatropic rearrangement. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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27
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Chen M, Liang Y, Dong T, Liang W, Liu Y, Zhang Y, Huang X, Kong L, Wang Z, Peng B. Z
‐Selective α‐Arylation of α,β‐Unsaturated Nitriles via [3,3]‐Sigmatropic Rearrangement. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010740] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mengyuan Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Yuchen Liang
- School of Chemical Science University of the Chinese Academy of Sciences Beijing 100049 China
| | - Taotao Dong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Weijian Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Yanping Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Yage Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Xin Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Zhi‐Xiang Wang
- School of Chemical Science University of the Chinese Academy of Sciences Beijing 100049 China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
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28
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Kinoshita J, Baralle A, Yoshida A, Yanagi T, Nogi K, Yorimitsu H. A Route to Indoles via Modified Fischer Indole Intermediates from Sulfonanilides and Ketene Dithioacetal Monoxides. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jun Kinoshita
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Alexandre Baralle
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Akira Yoshida
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Tomoyuki Yanagi
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Keisuke Nogi
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Hideki Yorimitsu
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
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29
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Kobayashi A, Matsuzawa T, Hosoya T, Yoshida S. One-pot Synthesis of Allyl Sulfides from Sulfinate Esters and Allylsilanes through Reduction of Alkoxysulfonium Intermediates. CHEM LETT 2020. [DOI: 10.1246/cl.200285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Akihiro Kobayashi
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Tsubasa Matsuzawa
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Suguru Yoshida
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
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30
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Kobayashi A, Matsuzawa T, Hosoya T, Yoshida S. Sulfoxide synthesis from sulfinate esters under Pummerer-like conditions. Chem Commun (Camb) 2020; 56:5429-5432. [PMID: 32292973 DOI: 10.1039/d0cc02253e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A facile synthetic method for the preparation of allyl sulfoxides by S-allylation of sulfinate esters proceeds through sulfonium intermediates without [3,3]-sigmatropic rearrangement and further Pummerer-type reactions of the resulting allyl sulfoxides. On the basis of the plausible reaction mechanism involving sulfonium salt intermediates, S-alkynylation and S-arylation were also accomplished.
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Affiliation(s)
- Akihiro Kobayashi
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
| | - Tsubasa Matsuzawa
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
| | - Suguru Yoshida
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
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31
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Tian J, Luo F, Zhang Q, Liang Y, Li D, Zhan Y, Kong L, Wang ZX, Peng B. Asymmetric Iodonio-[3,3]-Sigmatropic Rearrangement to Access Chiral α-Aryl Carbonyl Compounds. J Am Chem Soc 2020; 142:6884-6890. [DOI: 10.1021/jacs.0c00783] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Junsong Tian
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Fan Luo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Qifeng Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Yuchen Liang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Dongyang Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Yaling Zhan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
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Huang X, Zhang Y, Liang W, Zhang Q, Zhan Y, Kong L, Peng B. Dearomatization of aryl sulfoxides: a switch between mono- and dual-difluoroalkylation. Chem Sci 2020; 11:3048-3053. [PMID: 34122809 PMCID: PMC8157523 DOI: 10.1039/d0sc00244e] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Herein we describe the dearomatization of aryl sulfoxides with difluoroenol silyl ether (DFESE) using a rearrangement/addition protocol. The selection of the sulfoxide activator determines whether one or two difluoroalkyl groups are incorporated into dearomatized products. Using TFAA can deliberately halt the reaction at the mono-difluoroalkylated dearomatized intermediate formed via a [3,3]-rearrangement, which can be further trapped by external nucleophiles to give mono-difluoroalkylated alicycles. In contrast, switching to Tf2O enhances the electrophilicity of dearomatized intermediates, thus allowing for the adoption of a second DFESE to produce dual-difluoroalkylated alicycles. Herein we describe the dearomatization of aryl sulfoxides with difluoroenol silyl ether (DFESE) using a rearrangement/addition protocol.![]()
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Affiliation(s)
- Xin Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Yage Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Weijian Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Qifeng Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Yaling Zhan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
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Baralle A, Inukai T, Yanagi T, Nogi K, Osuka A, Nagaki A, Yoshida JI, Yorimitsu H. Tf2O-mediated Reaction of Alkenyl Sulfoxides with Unprotected Anilines in Flow Microreactors. CHEM LETT 2020. [DOI: 10.1246/cl.190831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Alexandre Baralle
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Tomoaki Inukai
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Tomoyuki Yanagi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Keisuke Nogi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Aiichiro Nagaki
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Jun-ichi Yoshida
- National Institute of Technology, Suzuka College, Shiroko-cho, Suzuka, Mie 510-0294, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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34
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Metal-free photoredox-catalysed formal C–H/C–H coupling of arenes enabled by interrupted Pummerer activation. Nat Catal 2020. [DOI: 10.1038/s41929-019-0415-3] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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35
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Li J, Chen Y, Zhong R, Zhang Y, Yang J, Ding H, Wang Z. [3,3]-Sigmatropic Rearrangement/Haller–Bauer Reaction of Aryl Sulfoxides and Selenoxides with Difluoroenoxysilanes: Access to CF2H-Containing Chalcogenides. Org Lett 2020; 22:1164-1168. [DOI: 10.1021/acs.orglett.0c00018] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinshan Li
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Yixin Chen
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Rong Zhong
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Yonggang Zhang
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Jianguo Yang
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, P. R. China
| | - Zhiming Wang
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
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36
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Abstract
A metal-free, oxidative coupling of phenols with various nucleophiles, including arenes, 1,3-diketones and other phenols, is reported. Cross-coupling is mediated by a sulfoxide which inverts the reactivity of the phenol partner. Crucially, the process shows high selectivity for cross-versus homo-coupling and allows efficient access to a variety of aromatic scaffolds including biaryls, benzofurans and, through an iterative procedure, aromatic oligomers. A metal-free, oxidative coupling of phenols with various nucleophiles, including arenes, 1,3-diketones and other phenols, is reported.![]()
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Affiliation(s)
- Zhen He
- Department of Chemistry, University of Manchester Oxford Rd Manchester M13 9PL UK
| | - Gregory J P Perry
- Department of Chemistry, University of Manchester Oxford Rd Manchester M13 9PL UK
| | - David J Procter
- Department of Chemistry, University of Manchester Oxford Rd Manchester M13 9PL UK
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37
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Hu M, He JN, Liu Y, Dong T, Chen M, Yan C, Ye Y, Peng B. [3,3]-Sigmatropic Rearrangement of Aryl Fluoroalkyl Sulfoxides with Alkyl Nitriles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901577] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Mengjie Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Jia-Ni He
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Yanping Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Taotao Dong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Mengyuan Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Chao Yan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Yulu Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
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38
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Wei J, Bao K, Qi C, Liu Y, Ni C, Sheng R, Hu J. Transition‐Metal‐Free Electrophilic Fluoroalkanesulfinylation of Electron‐Rich (Het)Arenes with Fluoroalkyl Heteroaryl Sulfones via C(Het)−S and S=O Bond Cleavage. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900959] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jun Wei
- College of Pharmaceutical SciencesZhejiang University Hangzhou 310058 People's Republic of China
| | - Kun Bao
- College of Pharmaceutical SciencesZhejiang University Hangzhou 310058 People's Republic of China
| | - Chengcheng Qi
- College of Pharmaceutical SciencesZhejiang University Hangzhou 310058 People's Republic of China
| | - Yao Liu
- College of Pharmaceutical SciencesZhejiang University Hangzhou 310058 People's Republic of China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 People's Republic of China
| | - Rong Sheng
- College of Pharmaceutical SciencesZhejiang University Hangzhou 310058 People's Republic of China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 People's Republic of China
- School of Physical Science and TechnologyShanghaiTech University 100 Haike Road Shanghai 201210 People's Republic of China
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39
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Yanagi T, Nogi K, Yorimitsu H. Construction of Biaryls from Aryl Sulfoxides and Anilines by Means of a Sigmatropic Rearrangement. Chemistry 2019; 26:783-787. [DOI: 10.1002/chem.201903570] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 09/05/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Tomoyuki Yanagi
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Keisuke Nogi
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Hideki Yorimitsu
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
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40
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Hori M, Nogi K, Nagaki A, Yorimitsu H. Annulative Synthesis of Thiazoles and Oxazoles from Alkenyl Sulfoxides and Nitriles via Additive Pummerer Reaction. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900169] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Mitsuki Hori
- Department of Chemistry, Graduate School of ScienceKyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Keisuke Nogi
- Department of Chemistry, Graduate School of ScienceKyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Aiichiro Nagaki
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of EngineeringKyoto University Nishikyo-ku, Kyoto 615-8510 Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of ScienceKyoto University Sakyo-ku, Kyoto 606-8502 Japan
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