Highly Regioselective and Stereoselective Radical Addition of p-TsBr to Substituted Terminal Allenes and Their Nucleophilic Substitutions: Synthesis of α,β-Unsaturated Sulfones
作者:Suk-Ku Kang、Ho-Won Seo、Young-Hwan Ha
DOI:10.1055/s-2001-15220
日期:——
Regioselective and stereoselective radical addition of p-TsBr to substituted allenes in the presence of a catalytic amount of AIBN afforded tosyl-substituted primary (E)-allylic bromides as the sole products. The nucleophilic substitution of the resulting allylic bromides to give substituted α,β-unsaturated sulfone derivatives is described.
在催化量 AIBN 的存在下,p-TsBr 与取代的烯烃进行区域选择性和立体选择性自由基加成,得到的唯一产物是对甲苯基取代的伯(E)-烯丙基溴。文中描述了亲核取代所生成的烯丙基溴化物以得到取代的 δ,δ-不饱和砜衍生物的过程。