3-phenyl-2-(prop-2-yn-1-ylsulfanyl)-3,5,6,7-tetrahydro-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one 在
溴 、
溶剂黄146 作用下,
反应 3.0h,
以68%的产率得到(1E)-1-(bromomethylidene)-5-oxo-4-phenyl-1,2,4,6,7,8-hexahydro-5H-cyclopenta-[4,5]thieno[3,2-e][1,3]thiazolo[3,2-a]pyrimidin-10-ium bromide