Allenes. Part XXI. The preparation of 1,1-dialkyl-3-iodoallenes and 1,1-dihalogenoallenes
作者:P. M. Greaves、M. Kalli、Phyllis D. Landor、S. R. Landor
DOI:10.1039/j39710000667
日期:——
1,1-Dialkyl-3-iodoallenes were prepared in good yield from 1,1-dialkylprop-2-yn-1-ols and 45% hydriodic acid in the presence of copper(I) iodide. Several 1-bromo- and 1-chloro-alk-1-yn-3-ols were converted by hydrogen bromide–copper(I) bromide or thionyl chloride into the corresponding 1,1-dibromo-, 1-bromo-1-chloro- or 1,1-dichloro-allenes. The mechanism of the reaction is discussed and the spectroscopic
在碘化铜(I)存在下,由1,1-二烷基丙-2-yn-1-醇和45%的氢碘酸以高收率制备1,1-二烷基-3-碘丙二烯。溴化氢-溴化铜(I)或亚硫酰氯将几种1-溴-和1-氯-烷基-1-yn-3-醇转化为相应的1,1-二溴-,1-溴-1-氯-或1,1-二氯丙二烯。讨论了反应机理,并报道了这些新化合物的光谱性质。