1
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Yu N, Lv JF, He SM, He KC, Zheng WH, Zhou YQ, Jiang K, Pan XC, Wei Y. Modular Assembly of 2-Aminoaniline Derivatives by Merging Hydroxylamine-Passerini and Hetero-Cope Rearrangement. Org Lett 2024; 26:1358-1363. [PMID: 38345019 DOI: 10.1021/acs.orglett.3c04270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
A metal-free three-component protocol that combines a hydroxylamine-Passerini reaction and hetero-Cope rearrangement was realized, which enables the modular assembly of a wide range of structurally new and interesting 2-aminoanilines bearing an α-hydroxyamide substructure.
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Affiliation(s)
- Ning Yu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Jing-Fang Lv
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Shi-Mei He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Kui-Cheng He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Wei-Hao Zheng
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Yu-Qiang Zhou
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Kun Jiang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Xi-Chun Pan
- College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Ye Wei
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
- College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang, 641112, China
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2
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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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3
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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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4
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Chen J, Liu S, Su S, Fan R, Zhang R, Meng W, Tan J. Sulfonium-based precise alkyl transposition reactions. SCIENCE ADVANCES 2023; 9:eadi1370. [PMID: 37713480 PMCID: PMC10881050 DOI: 10.1126/sciadv.adi1370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 08/14/2023] [Indexed: 09/17/2023]
Abstract
S-adenosyl-L-methionine (SAM), a sulfonium-based cofactor, plays an important role in numerous biological processes as methyl donor. Inspired by the function of sulfonium motif in this nature's synthetic toolkit, we here present an aryne-activation strategy that the sulfonium intermediates in situ generated from thioethers display unique reactivity toward alkyl group transposition. Experimental and theoretical studies indicate that the reaction occurs in an intermolecular fashion where the TfO--incorporated [K(18-crown-6)] complex acts as a key promoter for this thermodynamically favored process. Next, a series of robust, easy-to-prepare sulfonium salts are designed and developed as electrophilic alkylation reagents accordingly. Both systems feature for broad scope, excellent selectivity, and simple operation. Moreover, we highlight the synthetic value through molecular editing and late-stage modification of complex scaffolds or even active pharmaceutical ingredients.
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Affiliation(s)
- Jian Chen
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Shilu Liu
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Shuaisong Su
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Rong Fan
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Ruirui Zhang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiajing Tan
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
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5
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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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6
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Rourke MJ, Wang CT, Schull CR, Scheidt KA. Acyl Azolium-Photoredox-Enabled Synthesis of β-Keto Sulfides. ACS Catal 2023; 13:7987-7994. [PMID: 37969469 PMCID: PMC10651059 DOI: 10.1021/acscatal.3c01558] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
α-Heteroatom functionalization is a key strategy for C-C bond formation in organic synthesis, as exemplified by the addition of a nucleophile to electrophilic functional groups, such as iminium ions; oxocarbenium ions; and their sulfur analogues, sulfenium ions. We envisioned a photoredox-enabled radical Pummerer-type reaction realized through the single-electron oxidation of a sulfide. Following this oxidative event, α-deprotonation would afford α-thio radicals that participate in radical-radical coupling reactions with azolium-bound ketyl radicals, thereby accessing a commonly proposed mechanistic intermediate of the radical-radical coupling en route to functionalized additive Pummerer products. This system provides a complementary synthetic approach to highly functionalized sulfurous products, including modification of methionine residues in peptides, and beckons further exploration in C-C bond formations previously limited in the standard two-electron process.
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Affiliation(s)
- Michael J Rourke
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Charles T Wang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Cullen R Schull
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Karl A Scheidt
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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7
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Fan R, Liu S, Yan Q, Wei Y, Wang J, Lan Y, Tan J. Empowering boronic acids as hydroxyl synthons for aryne induced three-component coupling reactions. Chem Sci 2023; 14:4278-4287. [PMID: 37123174 PMCID: PMC10132127 DOI: 10.1039/d3sc00072a] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 03/13/2023] [Indexed: 03/16/2023] Open
Abstract
Boronic acids have become one of the most prevalent classes of reagents in modern organic synthesis, displaying various reactivity profiles via C-B bond cleavage. Herein, we describe the utilization of a readily available boronic acid as an efficient surrogate of hydroxide upon activation via fluoride complexation. The hitherto unknown aryne induced ring-opening reaction of cyclic sulfides and three-component coupling of fluoro-azaarenes are developed to exemplify the application value. Different from metal hydroxides or water, this novel hydroxy source displays mild activation conditions, great functionality tolerance and structural tunability, which shall engender a new synthetic paradigm and in a broad context offer new blueprints for organoboron chemistry. Detailed computational studies also recognize the fluoride activation mode, provide in-depth insights into the unprecedented mechanistic pathway and elucidate the reactivity difference of ArB(OH) x F y complexes, which fully support the experimental data.
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Affiliation(s)
- Rong Fan
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
| | - Shihan Liu
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University Chongqing 400030 China
| | - Qiang Yan
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
| | - Yun Wei
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
| | - Jingwen Wang
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
| | - Yu Lan
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University Chongqing 400030 China
- ZhengZhou JiShu Institute of AI Science Zhengzhou 450000 China
| | - Jiajing Tan
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
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8
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Liu W, Zhang Y, Xing S, Lan H, Chen X, Bai Y, Shao X. β-Trifluorosulfinylesters: tuneable reagents for switchable trifluoromethylsulfinylation and C–H trifluoromethylthiolation. Org Chem Front 2023. [DOI: 10.1039/d3qo00013c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
β-Trifluorosulfinylesters, a family of novel reagents from commercially available starting materials for direct trifluoromethylthiolation and trifluoromethylsulfinylation were developed.
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9
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Dutta J, Routray C, Pandey S, Biswal HS. Intermolecular noncovalent interactions with carbon in solution. Chem Sci 2022; 13:14327-14335. [PMID: 36545132 PMCID: PMC9749111 DOI: 10.1039/d2sc05431k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/20/2022] [Indexed: 11/22/2022] Open
Abstract
One of the most familiar carbon-centered noncovalent interactions (NCIs) involving an antibonding π*-orbital situated at the Bürgi-Dunitz angle from the electron donor, mostly lone pairs of electrons, is known as n → π* interactions, and if it involves a σ* orbital in a linear fashion, then it is known as the carbon bond. These NCIs can be intra- or inter-molecular and are usually weak in strength but have a paramount effect on the structure and function of small-molecular crystals and proteins. Surprisingly, the experimental evidence of such interactions in the solution phase is scarce. It is even difficult to determine the interaction energy in the solution. Using NMR spectroscopy aided with molecular dynamics (MD) simulation and high-level quantum mechanical calculations, herein we provide the experimental evidence of intermolecular carbon-centered NCIs in solution. The challenge was to find appropriate heterodimers that could sustain room temperature thermal energy and collisions from the solvent molecules. However, after several trial model compounds, the pyridine-N-oxide:dimethyltetracyanocyclopropane (PNO-DMTCCP) complex was found to be a good candidate for the investigation. NBO analyses show that the PNO:DMTCCP complex is stabilized mainly by intermolecular n → π* interaction when a weaker carbon bond gives extra stability to the complex. From the NMR study, it is observed that the NCIs between DMTCCP and PNO are enthalpy driven with an enthalpy change of -28.12 kJ mol-1 and dimerization energy of ∼-38 kJ mol-1 is comparable to the binding energies of a conventional hydrogen-bonded dimer. This study opens up a new strategy to investigate weak intermolecular interactions such as n → π* interaction and carbon bonds in the solution phase.
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Affiliation(s)
- Juhi Dutta
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) PO - Bhimpur-Padanpur, Via-Jatni, District - Khurda PIN - 752050 Bhubaneswar India +91-674-2494-185, +91-674-2494-186
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
| | - Chinmay Routray
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) PO - Bhimpur-Padanpur, Via-Jatni, District - Khurda PIN - 752050 Bhubaneswar India +91-674-2494-185, +91-674-2494-186
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
| | - Shalini Pandey
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) PO - Bhimpur-Padanpur, Via-Jatni, District - Khurda PIN - 752050 Bhubaneswar India +91-674-2494-185, +91-674-2494-186
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
| | - Himansu S Biswal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) PO - Bhimpur-Padanpur, Via-Jatni, District - Khurda PIN - 752050 Bhubaneswar India +91-674-2494-185, +91-674-2494-186
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
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10
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Wang J, Zhuang Y, Yu B, Wang X, Bi G, Huang X, Zhang W. Tf 2O-Mediated Direct Synthesis of 4-Sulfenylated Oxazoles from β-Keto Sulfoxides and Nitriles. J Org Chem 2022; 87:14870-14878. [PMID: 36174222 DOI: 10.1021/acs.joc.2c01630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A general and efficient method for the synthesis of 4-sulfenylated oxazoles is described. Trisubstituted oxazoles are obtained in good to excellent yields from β-keto sulfoxides and nitriles. The mechanistic study suggests that the reaction proceeds via the nucleophilic addition of nitriles to the in situ formed α-carbonyl cation followed by intramolecular cyclization.
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Affiliation(s)
- Jiateng Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, PR China
| | - Yunqing Zhuang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, PR China
| | - Bingxue Yu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, PR China
| | - Xiaofeng Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, PR China
| | - Gehua Bi
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, PR China
| | - Xin Huang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, PR China
| | - Weimin Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, PR China
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11
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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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12
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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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13
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Zhu G, Zhou J, Liu L, Li X, Zhu X, Lu X, Zhou J, Ye L. Catalyst‐Dependent Stereospecific [3,3]‐Sigmatropic Rearrangement of Sulfoxide‐Ynamides: Divergent Synthesis of Chiral Medium‐Sized
N
,
S
‐Heterocycles. Angew Chem Int Ed Engl 2022; 61:e202204603. [DOI: 10.1002/anie.202204603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Indexed: 01/20/2023]
Affiliation(s)
- Guang‐Yu Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Ji‐Jia Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Li‐Gao Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Xiao Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Xin‐Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Jin‐Mei Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
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14
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Pandey AK, Kumar A, Srivastava SK. Blue Light-Induced Coupling of N-Hydroxy Sulfonamides: An Efficient and Green Approach to Symmetrical Thiosulfonates. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1070428022060136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Zhu W, Zhang Q, Bao X, Lin Y, Xu G, Zhou H. Nucleophilic functionalizations of indole derivatives using the aromatic Pummerer reaction. Org Biomol Chem 2022; 20:3955-3959. [PMID: 35471233 DOI: 10.1039/d2ob00627h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Because of the electron-rich property of indoles, direct functionalization strategies towards indoles generally involve electrophilic substitutions. In this paper, an efficient protocol for nucleophilic hydroxylation, halogenation and esterification of indoles via the aromatic Pummerer process was developed. With the advantages of readily accessible starting materials, simple operation and mild conditions, this protocol should be of interest to synthetic scientists.
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Affiliation(s)
- Wen Zhu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, People's Republic of China. .,College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
| | - Qianyun Zhang
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
| | - Xingping Bao
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
| | - Yanfei Lin
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
| | - Guangyu Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, People's Republic of China.
| | - Hongwei Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, 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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Zhu G, Zhou J, Liu L, Li X, Zhu X, Lu X, Zhou J, Ye L. Catalyst‐Dependent Stereospecific [3,3]‐Sigmatropic Rearrangement of Sulfoxide‐Ynamides: Divergent Synthesis of Chiral Medium‐Sized
N
,
S
‐Heterocycles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Guang‐Yu Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Ji‐Jia Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Li‐Gao Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Xiao Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Xin‐Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Jin‐Mei Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
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18
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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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19
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Luo F, Zhou H, Chen XB, Liu XJ, Chen XD, Qian PF, Wu XP, Wang W, Zhang SL. Synthesis of α-Aryl Primary Amides from α-Silyl Nitriles and Aryl Sulfoxides through [3,3]-Sigmatropic Rearrangement. Org Lett 2022; 24:1700-1705. [DOI: 10.1021/acs.orglett.2c00334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Fan Luo
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hui Zhou
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xiao-Bei Chen
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xue-Jun Liu
- Shanghai Neutan Pharmaceutical Company, Ltd., Building 26, No. 555 Huanqiao Road, Pudong New Area, Shanghai 200131, P. R. China
| | - Xiao-Dong Chen
- Shanghai Neutan Pharmaceutical Company, Ltd., Building 26, No. 555 Huanqiao Road, Pudong New Area, Shanghai 200131, P. R. China
| | - Peng-Fei Qian
- School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xin-Ping Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wei Wang
- Department of Pharmacology and Toxicology and BIO5 Institute, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721-0207, United States
| | - Shi-Lei Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, 199 Ren’ai Road, Suzhou, Jiangsu 215123, P. R. China
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20
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YORIMITSU H, PERRY GJP. Sulfonium-aided coupling of aromatic rings via sigmatropic rearrangement. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2022; 98:190-205. [PMID: 35400695 PMCID: PMC9071926 DOI: 10.2183/pjab.98.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
Biaryl synthesis continues to occupy a central role in chemical synthesis. From blockbuster drug molecules to organic electronics, biaryls present numerous possibilities and new applications continue to emerge. Transition-metal-catalyzed coupling reactions represent the gold standard for biaryl synthesis and the mechanistic steps, such as reductive elimination, are well established. Developing routes that exploit alternative mechanistic scenarios could give unprecedented biaryl structures and expand the portfolio of biaryl applications. We have developed metal-free C-H/C-H couplings of aryl sulfoxides with phenols to afford 2-hydroxy-2'-sulfanylbiaryls. This cascade strategy consists of an interrupted Pummerer reaction and [3,3] sigmatropic rearrangement. Our method enables the synthesis of intriguing aromatic molecules, including oligoarenes, enantioenriched dihetero[8]helicenes, and polyfluorobiaryls. From our successes in aryl sulfoxide/phenol couplings and a deeper understanding of sigmatropic rearrangements for biaryl synthesis, we have established related methods, such as aryl sulfoxide/aniline and aryl iodane/phenol couplings. Overall, our fundamental interests in underexplored reaction mechanisms have led to various methods for accessing important biaryl architectures.
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Affiliation(s)
- Hideki YORIMITSU
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan
| | - Gregory J. P. PERRY
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan
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21
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Yanagi T, Yorimitsu H. Mechanistic Investigation of a Synthetic Route to Biaryls by the Sigmatropic Rearrangement of Arylsulfonium Species. Chemistry 2021; 27:13450-13456. [PMID: 34322930 DOI: 10.1002/chem.202101735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Indexed: 12/26/2022]
Abstract
A comprehensive mechanistic investigation was conducted on the coupling reaction of aryl sulfoxides with phenols by using trifluoroacetic anhydride to yield biaryls. NMR experiments revealed that our previously proposed mechanism, which consists of a cascade of an interrupted Pummerer reaction and a rate-determining [3,3] sigmatropic rearrangement, is reasonable. The electronic effects of the substrates were also evaluated to elucidate the nature of the rearrangement step. Based on experimental observations and theoretical calculations, we conclude that the rearrangement is highly asynchronous and stepwise rather than concerted when electron-rich phenols are employed for the reaction.
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Affiliation(s)
- Tomoyuki Yanagi
- 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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22
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Synthetic exploration of sulfinyl radicals using sulfinyl sulfones. Nat Commun 2021; 12:5244. [PMID: 34475405 PMCID: PMC8413321 DOI: 10.1038/s41467-021-25593-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 08/13/2021] [Indexed: 11/18/2022] Open
Abstract
Sulfinyl radicals – one of the fundamental classes of S-centered radicals – have eluded synthetic application in organic chemistry for over 60 years, despite their potential to assemble valuable sulfoxide compounds. Here we report the successful generation and use of sulfinyl radicals in a dual radical addition/radical coupling with unsaturated hydrocarbons, where readily-accessed sulfinyl sulfones serve as the sulfinyl radical precursor. The strategy provides an entry to a variety of previously inaccessible linear and cyclic disulfurized adducts in a single step, and demonstrates tolerance to an extensive range of hydrocarbons and functional groups. Experimental and theoretical mechanistic investigations suggest that these reactions proceed through sequential sulfonyl and sulfinyl radical addition. Sulfinyl radicals are an underexplored synthon in organic chemistry due to the fact that they reversibly add to pi systems and undergo homodimerization. Here the authors synthesize sulfonyl sulfones, previously thought to be unstable, and demonstrate their broad use as sulfinyl radical precursors in disulfurizations of alkenes and alkynes.
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23
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Abstract
Interrupted reactions reroute established processes to new and often unanticipated end points. Of particular interest are the cases in which a known reactive intermediate takes on a new reaction pathway, either because this pathway is lower in energy or because the conventional pathway is no longer available. Through analysis of documented cases, we aim to dissect the known interrupted reactions and trace their mechanistic origins. As new chemical processes are being discovered at a seemingly ever-increasing pace, it is likely that new interrupted reactions will continue to emerge. Our hope is that the cases considered in this Review will help identify new classes of these fascinating transformations.
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24
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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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25
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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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26
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Jin S, Chen F, Qian P, Cheng J. Cyanoalkylation/alkynylation of allylic alcohol through intramolecular radical 1,2-alkynyl migration. Org Biomol Chem 2021; 19:2416-2419. [PMID: 33645595 DOI: 10.1039/d1ob00192b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A di-tert-butyl peroxide (DTBP)-promoted difunctionalization of α-aryl α-alkynyl allylic alcohols with alkyl nitriles was developed, affording a series of α-alkynyl γ-cyano functionalized ketones in moderate yields. This procedure involved C(sp3)-H bond cleavage of alkyl nitriles and radical 3-exo-dig cyclization. After this, radical 1,2-alkynyl migration is preferred rather than 1,2-aryl migration.
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Affiliation(s)
- Shengnan Jin
- Institute of New Materials & Industry Technology, College of Chemistry&Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
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27
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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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28
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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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29
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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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30
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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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31
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Zhang G, Xu J. [3,3] Sigmatropic Shifts and Applications of Hydroxylamine Derivatives. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202103022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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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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33
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Azulenesulfonium and azulenebis(sulfonium) salts: Formation by interrupted Pummerer reaction and subsequent derivatisation by nucleophiles. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131700] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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34
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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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35
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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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36
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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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37
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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: 12] [Impact Index Per Article: 3.0] [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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38
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Xiong F, Zuo Y, Song Y, Zhang L, Zhang X, Xu S, Ren Y. Synthesis of ortho-Phenolic Sulfilimines via an Intermolecular Sulfur Atom Transfer Cascade Reaction. Org Lett 2020; 22:3799-3803. [PMID: 32337987 DOI: 10.1021/acs.orglett.0c01032] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
To expand the toolbox for the synthesis of ortho-phenolic sulfilimines, sigmatropic rearrangements were introduced to the field of sulfilimine chemistry. Herein we report a N-H sulfenylation/[2,3]-sigmatropic rearrangement cascade reaction. This mild reaction enables commercially available thiols to serve as the sulfenylation reagent and generates water as the sole byproduct. Moreover, the reaction has a wide substrate scope and can be conducted on a gram scale with excellent reaction efficiency.
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Affiliation(s)
- Feng Xiong
- School of Life Sciences, Nanjing University, Nanjing 210093, China.,Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Yingying Zuo
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yinan Song
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Linxing Zhang
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Xinhao Zhang
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Shaojian Xu
- Hygiene Sector, Joint Laboratory for Infectious Disease Prevention and Control, Longhua District Center for Disease Control and Prevention, Shenzhen 518109, China
| | - Yan Ren
- Hygiene Sector, Joint Laboratory for Infectious Disease Prevention and Control, Longhua District Center for Disease Control and Prevention, Shenzhen 518109, China
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39
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Bugaenko DI, Karchava AV, Yurovskaya MA. The versatility of DABCO: synthetic applications of its basic, nucleophilic, and catalytic properties. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02655-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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40
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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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41
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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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42
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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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43
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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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44
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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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45
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Cen M, Xiang Q, Xu Y, Duan S, Lv Y, Xu ZF, Li CY. Synthesis of α-cyano sulfone via thermal rearrangement of 1,4-disubstituted triazole mediated by carbene and radical species. Org Chem Front 2020. [DOI: 10.1039/c9qo01340g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
α-Cyano sulfone is produced conveniently from 1,4-disubstituted triazole, which involves carbene, ketenimine and radical species as the key intermediates.
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Affiliation(s)
- Mengjie Cen
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Qiaoyi Xiang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Yiwen Xu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Shengguo Duan
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Yaohong Lv
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Ze-Feng Xu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
- Key Laboratory of Organofluorine Chemistry
| | - Chuan-Ying Li
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- China
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46
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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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47
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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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48
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Yuan B, Jiang Y, Qi Z, Guan X, Wang T, Yan R. External Oxidant‐Free Oxidative Tandem Cyclization: NaI‐Catalyzed Thiolation for the Synthesis of 3‐Thiosubstituted Pyrroles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900620] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bingxiang Yuan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Yong Jiang
- School of Chemistry and Chemical EngineeringYangtze Normal University Chongqing People's Republic of China
| | - Zhenjie Qi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Xin Guan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Ting Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
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49
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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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50
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Acosta-Guzmán P, Rodríguez-López A, Gamba-Sánchez D. Pummerer Synthesis of Chromanes Reveals a Competition between Cyclization and Reductive Chlorination. Org Lett 2019; 21:6903-6908. [PMID: 31441312 DOI: 10.1021/acs.orglett.9b02520] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The competition between an unprecedented reductive chlorination and the Pummerer reaction was studied and applied to the synthesis of benzofused oxygen heterocycles including 3-aminochromanes and in the intramolecular chlorination of activated aromatic rings. The use of (COCl)2 as a Pummerer activator showed substantial activity, producing α-chlorinated sulfides that can undergo Pummerer-Friedel-Crafts cyclization. If the aromatic ring has electron-donating groups in position three, then the reaction follows a different pathway, yielding the reductive chlorination products, where the chlorine atom comes from a sulfonium salt.
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Affiliation(s)
- Paola Acosta-Guzmán
- Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Cra 1 No. 18A-12 Q:305, Bogotá 111711, Colombia
| | - Alvaro Rodríguez-López
- Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Cra 1 No. 18A-12 Q:305, Bogotá 111711, Colombia
| | - Diego Gamba-Sánchez
- Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Cra 1 No. 18A-12 Q:305, Bogotá 111711, Colombia
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