Unprecedented dithiolation of enals via their NHC-catalysed umpolung reaction with organic disulfides
作者:Santosh Singh、Lal Dhar S. Yadav
DOI:10.1039/c2ob25238d
日期:——
A novel one-pot N-heterocyclic carbene (NHC)-catalysed dithiolation of α,β-unsaturated aldehydes (enals) with organic disulfides is reported. The protocol involves homoenolate reactivity of enals, where the homoenolate attacks on the disulfide as a d3 nucleophile followed by thioesterification to afford β-aryl/alkylsulfanyl thioesters with complete atom economy.
报告了一种新型的单锅N-杂环卡宾(NHC)催化的α,β-不饱和醛(enals)与有机二硫化物的二硫化反应。该协议涉及enals的同源烯醇反应性,其中同源烯醇作为d3亲核试剂攻击二硫化物,随后发生硫酯化反应,生成具有完全原子经济性的β-芳基/烷基硫酯。