Ion-radical perfluoroalkylation. Part 11. Perfluoroalkylation of thiols by perfluoroalkyl iodides in the absence of initiators
作者:V.N. Boiko、G.M. Shchupak
DOI:10.1016/0022-1139(94)03132-0
日期:1994.12
Perfluoroalkylation of aliphatic, aromatic and heterocyclic thiols by perfluoroalkyl iodides in the presence of Et3N appears to occur spontaneously under daylight or the usual laboratory lighting conditions at 20–22 °C and is complete in 10–15 min to 2–3 h. An exception to this rule are thiols with a low nucleophilicity. The reaction is accompanied by thiol oxidation (2%–3%) and depends directly on
在Et 3N存在下,全氟烷基碘对脂肪族,芳香族和杂环硫醇的全氟烷基化作用似乎是在日光或通常的实验室照明条件下于20-22°C下自发发生的,并在10-15分钟至2-3小时内完成。该规则的一个例外是亲核性低的硫醇。该反应伴有硫醇氧化(2%–3%),并且直接取决于全氟烷基化剂和硫醇取代基的温度,光照,溶剂极性和电子性质。同时,与上述规则相反,经常发生二芳基二硫化物的形成。讨论了反应机理。