Unsymmetrical Disulfides Synthesis via Sulfenium Ion
作者:Amarchand Parida、Khokan Choudhuri、Prasenjit Mal
DOI:10.1002/asia.201900620
日期:2019.8
An umpolung approach for the synthesis of unsymmetrical disulfides via sulfenium ion is reported. In situ generated electrophilic sulfenium ion from electron‐rich thiols reacted with second thiols to yield unsymmetrical disulfides. Using an iodine catalyst and 4‐dimethylaminopyridine (DMAP)/water as promoter, the target syntheses were achieved in one pot under aerobic condition.
4′-Nitroarenesulphenanilides: Their use in the synthesis of unsymmetrical disulphides
作者:L. Benati、P.C. Montevecchi、P. Spagnolo
DOI:10.1016/s0040-4039(00)84361-0
日期:1986.1
The reaction of 4′-nitroarenesulphenanilides with thiols in the presence of boron trifluoride etherate can provide an effective route to unsymmetricaldisulphides.
NFSI-catalyzed S S bond exchange reaction for the synthesis of unsymmetrical disulfides
作者:Mengjie Song、Qingyue Hu、Zheng-Yi Li、Xiaoqiang Sun、Ke Yang
DOI:10.1016/j.cclet.2021.12.073
日期:2022.9
The metal-free SS bond exchangereaction of symmetrical disulfides catalyzed by NFSI is described. This novel protocol provides a facile and efficient approach to accessing important unsymmetrical disulfides. Furthermore, this strategy could also be utilized in the late-stage functionalization of amino acids, drugs, and natural products. The broad substrate scope, good functional group tolerance and
N -Trifluoroacetyl arenesulfenamides, effective precursors for synthesis of unsymmetrical disulfides and sulfenamides
作者:Ming Bao、Masao Shimizu
DOI:10.1016/j.tet.2003.09.080
日期:2003.11
unsymmetrical disulfides (4) and sulfenamides (5). Reactions of 3 with a variety of aromatic thiols at room temperature were generally complete within 5 min and gave unsymmetrical diaryl disulfides in high yields. Aralkyl disulfides were isolated in high yields from the reaction of 3 with aliphatic thiols. The nucleophilic substitution reactions of 3 with amines proceeded smoothly and provided N-substituted
A Versatile and Convenient Preparation of Unsymmetrical Diaryl Disulfides
作者:Dariusz Witt、Sebastian Demkowicz、Janusz Rachon
DOI:10.1055/s-2008-1067118
日期:——
of unsymmetrical diaryl disulfides under mild conditions in excellent yields. The described method is based on the straightforward preparation of 5,5-dimethyl-2-thioxo-1,3,2-dioxaphosphorinane-2-sulfenyl bromide from readily available 5,5-dimethyl-2-sulfanyl-2-thioxo-1,3,2-dioxaphosphorinane or bis(5,5-dimethyl-2-thioxo-1,3,2-dioxaphosphorinan-2-yl) disulfide. The unsymmetrical diaryl disulfides can