3-(Alkylsulfanyl)- and 3-(arylsulfanyl)indoles were efficiently prepared by the reaction of indoles with sodium sulfinates mediated by iodineâPPh3 in ethanol. The salient features of the present protocol are simplicity, high efficiency, non-anhydrous conditions, environmentally friendly reagents and solvent, and short reaction time.
Synthesis of di(hetero)aryl sulfides by directly using arylsulfonyl chlorides as a sulfur source
作者:Qian Wu、Dongbing Zhao、Xurong Qin、Jingbo Lan、Jingsong You
DOI:10.1039/c1cc13633j
日期:——
A new, efficient protocol for the synthesis of di(hetero)aryl sulfides is described. Cheap and easily available arylsulfonylchlorides as a sulfur source reductively couple with electron-rich (hetero)arenes (e.g., indolizines, indoles, electron-rich benzenes, etc.) in the presence of triphenylphosphine to afford di(hetero)aryl thioethers in good yields.
Cu-Catalysed Direct Bis-Thiolation of Benzoheterocycles with Arylsulfonyl Hydrazides
作者:Lingjuan Chen、Jiangxin Pu、Ping Liu、Bin Dai
DOI:10.3184/174751918x15350179602459
日期:2018.9
bis-arylsulfenylated indoles (10), benzofurans (3), and benzothiophenes (3) and of monosulfenylated indoles (5), 12 of which are novel, were prepared in good yields via a Cu-catalysed direct sulfenylation of benzoheterocycles with arylsulfonylhydrazides. Sulfonothioates are probably the major thiolated intermediates in this transformation.
sulfonamides as sulfenylating agents has been established. In the presence of catalytic amounts of iodine and N-hydroxysuccinimide, N-hydroxy sulfonamides participated in sulfenylation with indoles, 7-azaindole, N-methyl pyrrole, and 2-naphthol to afford structurally diverse thioethers in moderate to excellent yields with very high regioselectivity.