作者:R. N. Kadikova、I. R. Ramazanov、A. K. Amirova、O. S. Mozgovoj、U. M. Dzhemilev
DOI:10.1007/s11172-022-3640-x
日期:2022.10
Tetraalkyl-substituted (E, E)-buta-1,3-dienes were synthesized regio- and stereoselectively by the tantalum(V) chloride-catalyzed reaction of dialkyl-substituted acetylenes with EtAlCl2 and sodium metal in toluene followed by hydrolysis or deuterolysis. A mechanism of these transformations was suggested. The in situ generated organoaluminum intermediates reacted with methylsulfonyl chloride and iodine to give tetraalkyl-substituted (Z,Z)-1,4-dichlorobuta-1,3-dienes and 1,4-diiodobuta-1,3-dienes, respectively.
通过氯化钽催化二烷基取代炔与乙基铝氯化物和金属钠在甲苯中的反应,然后进行水解或氘解,可以区域选择性、立体选择性合成四烷基取代(E,E)-1,3-丁二烯。提出了这些转化的机理。原位生成的有机铝中间体与甲基磺酰氯和碘反应,分别生成四烷基取代(Z,Z)-1,4-二氯-1,3-丁二烯和1,4-二碘-1,3-丁二烯。