A one-pot synthesis of thiophene and pyrrole derivatives from readily accessible 3,5-dihydro-1,2-dioxines
作者:Cassie E Hewton、Marc C Kimber、Dennis K Taylor
DOI:10.1016/s0040-4039(02)00503-8
日期:2002.4
A one-pot synthesis of 2,5-disubstituted thiophene, 1,2,5-tri- and 2,5-disubstituted pyrrole derivatives from readily available 3,5-dihydro-1,2-dioxines is described. The reaction proceeds by an initial Kornblum–de la Mare rearrangement of the 3,5-dihydro-1,2-dioxine to its isomeric 1,4-diketone followed by condensation of the in situ 1,4-diketone with sulfur, ammonia or a primary amine.
描述了从容易获得的3,5-二氢-1,2-二恶英一锅合成2,5-二取代的噻吩,1,2,5-三-和2,5-二取代的吡咯衍生物。通过3,5-二氢-1,2-二恶英的Kornblum-de la Mare初始重排为其异构体1,4-二酮,然后将原位1,4-二酮与硫,氨或伯胺。