作者:Rainer Herges、Christoph Hoock
DOI:10.1055/s-1991-28408
日期:——
Reaction of potassium trithiocarbonate with 1,4-dichloro-, 1,4-bis(tosyloxy)- or 1,4-dibromo-2-butyne (1a-c) affords 4-vinylidene-1,3-dithiolane-2-thione (2) in excellent yields. The trithiocarbonate 2 is desulfurized with 1,3-dimethyl-2-phenyl-1,3,2-diazaphospholidine (3) to give butatriene (4) under very mild conditions
三硫代碳酸钾与1,4-二氯、1,4-双(托烯氧基)或1,4-二溴-2-丁炔(1a-c)反应生成4-乙烯基-1,3-二硫烷-2-硫酮(2),且产率极好。二硫烷2在非常温和的条件下与1,3-二甲基-2-苯基-1,3,2-二氮膦啶(3)脱硫,得到丁聚烯(4)。