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n-bromosuccinimide
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A simple, economical, and catalyst-free oxidation of thiols to disulfides
, Article Journal of Sulfur Chemistry ; Volume 30, Issue 6 , 2009 , Pages 578-580 ; 17415993 (ISSN) ; Hashemi, M. M ; Sharif University of Technology
Abstract
A simple, rapid, and highly efficient method for the preparation of symmetrical aliphatic, aromatic, and heteroaromatic disulfides is reported. Addition of NBS to an alkyl- or arylthiol under catalyst-free conditions in dichloromethane solution produces the corresponding disulfides in nearly quantitative yields
An efficient one-step cyclization of thiobenzanilides to benzothiazoles: Using N-bromosuccinimide under mild conditions
, Article Journal of Sulfur Chemistry ; Volume 30, Issue 5 , 2009 , Pages 507-512 ; 17415993 (ISSN) ; Zargarani, D ; Sharif University of Technology
2009
Abstract
Benzothiazoles were readily prepared in one step from thiobenzanilides using N-bromosuccinimide in CH2Cl2-CCl4 (1:1V/V) at room temperature, with good yields under mild reaction conditions
An intriguing effect of lithium perchlorate dispersed on silica gel in the bromination of aromatic compounds by N-bromosuccinimide
, Article Canadian Journal of Chemistry ; Volume 83, Issue 2 , 2005 , Pages 146-149 ; 00084042 (ISSN) ; Azizi, N ; Saidi, M. R ; Sharif University of Technology
2005
Abstract
A convenient and efficient procedure for electrophilic aromatic bromination has been developed by mixing of N-bromosuccinimide and an aromatic compound at room temperature on the surface of silica gel mixed with solid anhydrous LiClO4. All of the substrates examined underwent clean electrophilic aromatic bromination in reaction times of a few minutes to afford the corresponding bromoarenes under neutral conditions in excellent yield. In the case of thiophenol, no substitution reaction occurred, and the corresponding disulfide was obtained in excellent yield. © 2005 NRC Canada