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Singh G, Marupalli SS, Arockiaraj M, Rajeshkumar V. I 2-Cs 2CO 3 Mediated Intramolecular C2-Amination and Oxidative Rearrangement Cascade of C-3 Phenylthio Indoles: A Route to Synthesize Thiosulfonate-Embedded 2-Iminoindolin-3-ones. J Org Chem 2024; 89:5861-5870. [PMID: 38552213 DOI: 10.1021/acs.joc.4c00056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
An efficient, transition-metal-free protocol employing I2/Cs2CO3 for the synthesis of thiosulfonate containing 2-iminoindolin-3-ones motifs has been developed from C-3 phenylthio indoles. The reaction proceeded through intramolecular cyclization involving C-N bond formation, leading to the formation of indole-fused benzothiazines as a key intermediate. Remarkably, Cs2CO3 played a crucial role in the reaction as an oxygen source, enabling oxidative rearrangement with [1,4]-sulfonyl migration to furnish the final products with the formation of multiple functional groups such as C═O, C═N, and S-SO2.
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Affiliation(s)
- Gargi Singh
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda - 506004, Telangana, India
| | - Sasi Sree Marupalli
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda - 506004, Telangana, India
| | - Mariyaraj Arockiaraj
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda - 506004, Telangana, India
| | - Venkatachalam Rajeshkumar
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda - 506004, Telangana, India
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2
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Raji Reddy C, Ajaykumar U, Kolgave DH. Expeditious Access to Spiro-Fused 2,5-Cyclohexadienones via Thio(seleno)cyanative ipso-Cyclization. J Org Chem 2020; 85:15521-15531. [PMID: 33225702 DOI: 10.1021/acs.joc.0c02270] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A facile oxidative dearomatization of N-(p-methoxyaryl)propiolamides has been established for the synthesis of spiro-fused 2,5-cyclohexadienone frameworks via thio(seleno)cyanative ipso-cyclization in the presence of ceric ammonium nitrate (CAN) as the oxidant. The present method, involving the formation of C-S and C-C bonds, was also extended to (p-methoxyaryl)propiolates for thiocyanative ipso-cyclization. Furthermore, the obtained chalcogeno-spirocyclohexadienones were transformed into uniquely functionalized spirocyclohexadienone derivatives.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Uprety Ajaykumar
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Dattahari H Kolgave
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Mampuys P, McElroy CR, Clark JH, Orru RVA, Maes BUW. Thiosulfonates as Emerging Reactants: Synthesis and Applications. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900864] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- P. Mampuys
- Organic Synthesis, Department of ChemistryUniversity of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
| | - C. R. McElroy
- Green Chemistry Centre of ExcellenceUniversity of York, Heslington York YO10 5DD U.K
| | - J. H. Clark
- Green Chemistry Centre of ExcellenceUniversity of York, Heslington York YO10 5DD U.K
| | - R. V. A. Orru
- Department of Chemistry & Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines and Systems (AIMMS)VU University Amsterdam De Boelelaan 1108 1081 HZ Amsterdam The Netherlands
| | - B. U. W. Maes
- Organic Synthesis, Department of ChemistryUniversity of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
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4
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Zhang X, Cui T, Zhang Y, Gu W, Liu P, Sun P. Electrochemical Oxidative Cross‐Coupling Reaction to Access Unsymmetrical Thiosulfonates and Selenosulfonates. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900047] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Xiaofeng Zhang
- College of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 People's Republic of China
| | - Ting Cui
- College of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 People's Republic of China
| | - Yanghao Zhang
- College of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 People's Republic of China
| | - Weijin Gu
- College of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 People's Republic of China
| | - Ping Liu
- College of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 People's Republic of China
| | - Peipei Sun
- College of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 People's Republic of China
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5
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Cao L, Luo SH, Jiang K, Hao ZF, Wang BW, Pang CM, Wang ZY. Disproportionate Coupling Reaction of Sodium Sulfinates Mediated by BF 3·OEt 2: An Approach to Symmetrical/Unsymmetrical Thiosulfonates. Org Lett 2018; 20:4754-4758. [PMID: 30067375 DOI: 10.1021/acs.orglett.8b01808] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The BF3·OEt2-mediated disproportionate coupling reaction of sodium sulfinates was found for the first time. In this reaction, various S-S(O)2 bonds can be formed, efficiently giving thiosulfonates in moderate to excellent yields. As a convenient protocol for the synthesis of symmetrical and unsymmetrical thiosulfonates, its reaction mechanism involves the formation of a thiyl radical and sulfonyl radical via a sulfinyl radical disproportionation. What is more, this transformation can also be applied practically as a gram-scale reaction and to the two-step synthesis of sulfone and sulfonamide in one pot in situ using thiosulfonate as an intermediate.
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Affiliation(s)
- Liang Cao
- School of Chemistry and Environment , South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou 510006 , P. R. China
| | - Shi-He Luo
- School of Chemistry and Environment , South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou 510006 , P. R. China.,Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , 381 Wushan Road , Guangzhou 510640 , P. R. China
| | - Kai Jiang
- School of Chemistry and Environment , South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou 510006 , P. R. China
| | - Zhi-Feng Hao
- School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , P. R. China
| | - Bo-Wen Wang
- School of Chemistry and Environment , South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou 510006 , P. R. China
| | - Chu-Ming Pang
- School of Chemistry and Environment , South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou 510006 , P. R. China
| | - Zhao-Yang Wang
- School of Chemistry and Environment , South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou 510006 , P. R. China.,Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , 381 Wushan Road , Guangzhou 510640 , P. R. China
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6
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Aerobic intramolecular aminothiocyanation of unactivated alkenes promoted by in situ generated iodine thiocyanate. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Ichake SS, Rajawinslin RR, Kavala V, Villuri BK, Yang HT, Kuo CW, Yao CF. N-Bromosuccinimide-Mediated Thiocyanation of Cyclohexene-Fused IsoxazolineN-Oxides. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201500453] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sachin S. Ichake
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei- 116, Taiwan R.O.C
| | - R. R. Rajawinslin
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei- 116, Taiwan R.O.C
| | - Veerababurao Kavala
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei- 116, Taiwan R.O.C
| | - Bharath Kumar Villuri
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei- 116, Taiwan R.O.C
| | - Huei-Ting Yang
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei- 116, Taiwan R.O.C
| | - Chun-Wei Kuo
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei- 116, Taiwan R.O.C
| | - Ching-Fa Yao
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei- 116, Taiwan R.O.C
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