Arylsulfur chlorotetrafluorides as useful fluorinating agents: Deoxo- and dethioxo-fluorinations
作者:Teruo Umemoto、Rajendra P. Singh
DOI:10.1016/j.jfluchem.2012.03.008
日期:2012.8
and effectively react with the sulfur compounds to give the corresponding fluoro compounds in high yields. Since they are the intermediates for the production of industrially useful arylsulfurpentafluorides, arylsulfur chlorotetrafluorides 1, in particular, phenylsulfur chlorotetrafluoride (1a) are expected to find use as inexpensive and versatile deoxo- and dethioxo-fluorinating agents for the preparation
Reaction of carboxylic thionoesters with dimethylaluminium methylselenolate in diethyl ether gave the corresponding Se-methyl thionoselenolesters in 87–98% yield.
将羧基硫代酯与甲基硒酸二甲铝在二乙醚中反应,可得到相应的硒甲基硫代硒酯,收率为 87-98%。
The first synthesis of aliphatic sulfines from thiono-esters
Reaction of various thiono-esters with one equivalent of meta-chloroperoxybenzoic acid at 0°C in dichloromethane furnishes the corresponding sulfines, evidenced for the first time. These thiocarbonyl oxides are rather unstable at room temperature and give carboxylic esters, with loss of sulfur. The overall sequence provides an easy and quantitative CS → CO transformation.
Ether-containing or thioether-containing 1,3-diketones and the use
申请人:Ciba-Geigy Corporation
公开号:US04992504A1
公开(公告)日:1991-02-12
Composition containing a chlorine-containing polymer and at least one compound of the formula IA ##STR1## in which R.sup.1 and R.sup.3 independently of one another are C.sub.1 -C.sub.12 alkyl, phenyl, phenyl which is substituted by one to three C.sub.1 -C.sub.12 alkyl groups, C.sub.7 -C.sub.10 phenylalkyl or C.sub.7 -C.sub.10 phenylalkyl which is substituted on the phenyl ring by one to three C.sub.1 -C.sub.12 alkyl groups and R.sup.1 is additionally --R.sup.2 --X--R.sup.3, R.sup.2' is C.sub.1 -C.sub.10 alkylene, R.sup.4 is hydrogen, C.sub.2 -C.sub.5 alkoxycarbonyl or C.sub.2 -C.sub.5 alkanoyl and X is oxygen or sulfur. Compounds of the formula IA in which R.sup.2' is other than methylene are novel, with the exception of the compounds ##STR2##
Fluorination of Thiocarbonyl Compounds with Bis(2-methoxyethyl)aminosulfur Trifluoride (Deoxo-Fluor Reagent): A Facile Synthesis of <i>gem</i>-Difluorides
作者:Gauri S. Lal、Elyse Lobach、Ann Evans
DOI:10.1021/jo000020j
日期:2000.8.1
A variety of thiocarbonyl derivatives (thioketone, thioester, thioamide, dithioester, and dithiocarbamate) were converted to the corresponding gem-difluorides in excellent yields on reaction with the fluorinating agent, bis(2-methoxyethyl)aminosulfur trifluoride, in the presence of SbCl3.