Polylithiumorganic Compounds. Part 27: C,C-Bond Forming Reactions of 3,4-Dilithio-2,5-dimethyl-2,4-hexadiene
作者:Adalbert Maercker、Joachim van de Flierdt、Ulrich Girreser
DOI:10.1016/s0040-4020(00)00229-5
日期:2000.5
The reaction of the title compound 3,4-dilithio-2,5-dimethyl-2,4-hexadiene (4) with various mono- and bifunctional carbon-centered electrophiles is investigated, with special emphasis on carbonyl and carbonic acid derivatives. Depending on the nature of the electrophile, mono- and disubstituted derivatives with either butadiene, allene, or alkyne skeleton are obtained. Ring forming reactions in the
研究了标题化合物3,4-二硫代-2,5-二甲基-2,4-己二烯(4)与各种单官能和双官能碳中心亲电试剂的反应,特别是羰基和碳酸衍生物。取决于亲电试剂的性质,获得具有丁二烯,丙二烯或炔骨架的单取代和二取代的衍生物。仅在少数情况下观察到第二个衍生化步骤中的成环反应。带有卤素作为离去基团的亲电试剂通过不同的机理反应,因此不适合进行C,C键形成反应。在这项研究中获得的化合物是合适的,具有高反应性的结构单元,可用于进一步修饰。