Palladium-catalyzed condensation of aryl halides with phenylsulfonylacetonitrile and diethyl cyanomethylphosphonate.
作者:Takao SAKAMOTO、Eisaku KATOH、Yoshinori KONDO、Hiroshi YAMANAKA
DOI:10.1248/cpb.38.1513
日期:——
The palladium(0)-catalyzed condensation of aryl halides with the sodium salts of phenylsulfonylacetonitrile and diethyl cyanomethylphonate in dimethoxyethane gave the corresponding α-phenylsulfonylareneacetonitriles and diethyl arylcyanomethylphosphonates in good yields.The α-phenylsulfonylareneacetonitriles were easily desulfonylated with zinc to give the areneacetonitriles, and the arylcyanomethylphonates were converted to the alkylideneareneacetonitriles by means of the Horner-Emmons reaction.
用钯(0)催化的芳香卤化物与苯基磺酰乙腈和二乙基氰基甲基膦酸钠在二甲氧基乙烷中缩合,得到相应的α-苯基磺酰芳烃乙腈和二乙基芳氰基甲基膦酸酯,产率良好。α-苯基磺酰芳烃乙腈可以用锌轻松去磺化生成芳烃乙腈,而芳氰基甲基膦酸酯通过霍纳-艾蒙斯反应转化为烷基亚烯芳烃乙腈。