作者:Y. A. Heus-Kloos、R. L. P. De Jong、H. D. Verkruijsse、L. Brandsma、S. Julia
DOI:10.1055/s-1985-31401
日期:——
1,1-Bis[methylthio]-1,3-butadiene and its 3-methyl derivative (which are vinylketene S,S-acetals) are prepared in 80-86% yields in a one-pot reaction by indirect lithiation of propene or isobutene, respectively, via the potassio derivative, reaction of the 2-alkenyllithium with carbon disulfide, and S,S′-dimethylation of the resultant lithium 3-butenedithiolate with methyl iodide.
1,1-双[甲硫基]-1,3-丁二烯及其 3-甲基衍生物(属于乙烯酮 S,S-乙醛)是通过丙烯或异丁烯的间接石碳酸化反应、2-烯基锂与二硫化碳的反应以及生成的 3-丁二硫酸锂与碘化甲酯的 S,S′-二甲基化反应,以 80-86% 的收率在一次反应中制备出来的。