作者:Per Strande、Tore Benneche、Kjell Undheim
DOI:10.1002/jhet.5570220430
日期:1985.7
major product is due to N-alkylation, the minor product to O-alkylation. N-Alkylation is favoured by the presence of a tertiary amine in a solvent of low dielectric constant and also by a change of the α-halo sulfide substituent from chlorine to iodine. Complete selectivity can be achieved. The course of the reaction is rationalized in terms of the HSAB-principle.
当α-卤代硫化物与环境2-嘧啶酮反应时,主要产物是由于N-烷基化,次要产物是O-烷基化。通过在低介电常数的溶剂中存在叔胺,以及通过将α-卤代硫化物取代基从氯变为碘来促进N-烷基化。可以实现完全的选择性。根据HSAB原理,反应过程是合理的。