New mechanistic aspects on the catalytic transformation of vinylthiiranes to mono and disubstituted 3,6-dihydro-1,2-dithiins by tungsten pentacarbonyl monoacetonitrile
作者:David W Lupton、Dennis K Taylor
DOI:10.1016/s0040-4020(02)00398-8
日期:2002.5
alkyl and aryl mono- and disubstituted 3,6-dihydro-1,2-dithiins have been synthesised from their corresponding vinylthiiranes exploiting Adams' tungsten pentacarbonyl monoacetonitrile catalytic transformation. New conclusions pertaining to the rate determining step, the sensitivity of the process to precursor sterics and electronics, and the nature of various reaction intermediates are highlighted.
利用Adams的五羰基钨单乙腈催化转化反应,已从相应的乙烯基硫烷合成了各种烷基和芳基的单取代或双取代的3,6-二氢-1,2-二硫辛。重点介绍了有关速率确定步骤,该方法对前体空间和电子学的敏感性以及各种反应中间体的性质的新结论。