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Kumar P, Bhalla A. Isothiocyanates ( in situ) and sulfonyl chlorides in water for N-functionalization of bicyclic amidines: access to N-alkylated γ-/ω-lactam derivatized thiourea and sulfonamides. Org Biomol Chem 2023; 21:8868-8874. [PMID: 37888837 DOI: 10.1039/d3ob01584j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Herein, we showcase the potential of isothiocyanates generated in situ and aryl sulfonyl chlorides as electrophiles in water for N-functionalization of bicyclic amidines (DBN and DBU). This strategy provides complementary access to a range of thiouredosulfides, sulfonamides, aroylthioureas and amides derivativatized with distal γ- and ω-lactams. A novel sulfonyl chloride mediated formation of β-uredo sulfides has been achieved from β-isothiocyanato sulfides, removing the requirement for the harsh synthesis of unstable isocyanates. Mechanistic studies suggest a radical mechanism for the difunctionalization of alkenes, the efficacy of H2O in the ring opening of bicyclic amidines, and an oxygen source along with sulfonyl chloride as desulfurization agents for thiourea to afford urea derivatives.
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Affiliation(s)
- Pankaj Kumar
- Department of Chemistry and Centre of Advance Studies in Chemistry, Panjab University, Chandigarh, 160014, UT, India.
| | - Aman Bhalla
- Department of Chemistry and Centre of Advance Studies in Chemistry, Panjab University, Chandigarh, 160014, UT, India.
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Jadhav PM, Rode AB, Kótai L, Pawar RP, Tekale SU. Revisiting applications of molecular iodine in organic synthesis. NEW J CHEM 2021. [DOI: 10.1039/d1nj02560k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Molecular iodine contributes significantly to organic transformations in synthetic organic chemistry. It works effectively due to its mild Lewis acidic character, ability as an oxidizing agent, good moisture stability, and easy availability.
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Affiliation(s)
- Popat M. Jadhav
- Department of Chemistry, Deogiri College, Aurangabad 431 005, Maharashtra, India
| | - Ambadas B. Rode
- Regional Centre for Biotechnology, Faridabad-121 001, Haryana (NCR Delhi), India
| | - László Kótai
- Research Centre for Natural Sciences, ELKH, H-1117, Budapest, Hungary
| | - Rajendra P. Pawar
- Department of Chemistry, Shiv Chhatrapati College, Aurangabad 431005, Maharashtra, India
| | - Sunil U. Tekale
- Department of Chemistry, Deogiri College, Aurangabad 431 005, Maharashtra, India
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Zhang H, Wang H, Jiang Y, Cao F, Gao W, Zhu L, Yang Y, Wang X, Wang Y, Chen J, Feng Y, Deng X, Lu Y, Hu X, Li X, Zhang J, Shi T, Wang Z. Recent Advances in Iodine-Promoted C-S/N-S Bonds Formation. Chemistry 2020; 26:17289-17317. [PMID: 32470225 DOI: 10.1002/chem.202001414] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/27/2020] [Indexed: 12/19/2022]
Abstract
Sulfur-containing scaffold, as a ubiquitous structural motif, has been frequently used in natural products, bioactive chemicals and pharmaceuticals, particularly C-S/N-S bonds are indispensable in many biological important compounds and pharmaceuticals. Development of mild and general methods for C-S/N-S bonds formation has great significance in modern research. Iodine and its derivatives have been recognized as inexpensive, environmentally benign and easy-handled catalysts or reagents to promote the construction of C-S/N-S bonds under mild reaction conditions, with good regioselectivities and broad substrate scope. Especially based on this, several new strategies, such as oxidation relay strategy, have been greatly developed and accelerated the advancement of this field. This review focuses on recent advances in iodine and its derivatives promoted hybridized C-S/N-S bonds formation. The features and mechanisms of corresponding reactions are summarized and the results of some cases are compared with those of previous reports. In addition, the future of this domain is discussed.
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Affiliation(s)
- Honghua Zhang
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Huihong Wang
- State Key Laboratory of Applied Organic Chemistry, College of, Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Yi Jiang
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Fei Cao
- State Key Laboratory of Applied Organic Chemistry, College of, Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Weiwei Gao
- State Key Laboratory of Applied Organic Chemistry, College of, Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Longqing Zhu
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Yuhang Yang
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Xiaodong Wang
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Yongqiang Wang
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Jinhong Chen
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Yiyue Feng
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Xuemei Deng
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Yingmei Lu
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Xiaoling Hu
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Xiangxiang Li
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Juan Zhang
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Tao Shi
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China
| | - Zhen Wang
- School of Pharmacy, Lanzhou University, 199 West Donggang Road, Lanzhou, 730000, P. R. China.,State Key Laboratory of Applied Organic Chemistry, College of, Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
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