Sequential processing of monolithiated tertiary propargylamines with 2-(vinyloxy)ethyl isothiocyanate and t-BuOK–DMSO results in the introduction of a highly reactive 2-(vinyloxy)ethyl group at the position 1 of the pyrrole ring thus formed. In this way, a series of new 5-sulfanyl-1-[2-(vinyloxy)ethyl]-1H-pyrrol-2-amines were obtained in a yield of up to 92%. The latter in the presence of t-BuOK–DMSO
摘要:通过使用2-(vinyloxy)ethyl异
硫氰酸酯和t-BuOK-
DMSO对单体化的三级
丙炔胺进行顺序处理,可以在所形成的
吡咯环的1位引入高反应性的2-(vinyloxy)ethyl基团。通过这种方式,得到了一系列新的5-
硫醇基-1-[2-(vinyloxy)ethyl]-1H-
吡咯-2-胺,收率高达92%。在t-BuOK-
DMSO体系的存在下(110-120℃,10-15分钟),后者消除
乙烯醇,从而得到罕见的
1-乙烯基
吡咯化合物,即5-
硫醇基-
1-乙烯基-1H-
吡咯-2-胺,这是通过已知方法无法获得的。