Kumulierte Ylide; XVIII<sup>11</sup>. Eine Synthesemöglichkeit für 3-Arylorthoacrylsäure-triethylester
作者:Hans Jürgen Bestmann、Kurt Roth
DOI:10.1055/s-1986-31650
日期:——
A Synthesis of Triethyl 3-Arylorthoacrylates Diethoxyethenylidenetriphenylphosphorane adds ethanol to give 2,2, 2-triethoxyethylidenetriphenylphosphorane which undergoes the Wittig reaction with aromatic aldehydes to afford triethyl 3-arylorthoacrylates. In these products, the (E)-isomers predominate.
3-芳基原位丙烯酸三乙酯的合成 乙氧基亚甲基三苯基膦加入乙醇得到2,2,2-三乙氧基亚甲基三苯基膦,后者与芳香醛发生维蒂希反应,得到3-芳基原位丙烯酸三乙酯。在这些产品中,(E)-异构体占主导地位。