α-Lithio conjugated enyne sulfones, easily generated from enyne sulfones 1 and 2 and MeLi, upon reaction with carbonyl compounds followed by treatment with MeLi afford the 2,4-diynols 4a–g and 5a–c in high yields.
α-
锂共轭烯炔砜,可通过烯炔砜1和2以及
甲基锂与羰基化合物反应,然后与
甲基锂处理,从而容易生成,并高产率地生成2,4-二炔醇4a-g和5a-c。