Facile conversion of CF3-containing propargylic alcohol derivatives via the corresponding allenes
作者:Takashi Yamazaki、Yohsuke Watanabe、Nao Yoshida、Tomoko Kawasaki-Takasuka
DOI:10.1016/j.tet.2012.05.131
日期:2012.8
Empirical information on the acidity of the propargylic proton from our previous work allowed us to develop novel synthetic transformations of readily available terminally trifluoromethylated propargylic alcohols 1 into the corresponding allenyl tosylates 3a, 1-tosyloxy- or 1-acyloxy-4,4,4-trifluorobutan-2-ones 4, and 2-(2,2,2-trifluoroethyl)prop-2-en-1-ones 5, which was enabled by such common bases
来自我们先前工作的关于炔丙基质子酸度的经验信息,使我们能够开发出易于合成的三氟甲基化炔丙基醇1到相应的烯基甲苯磺酸酯3a,1-甲苯磺酰氧基或1-酰氧基-4,4,4-的新型合成转化方法。三氟丁-2-酮4和2-(2,2,2-三氟乙基)丙-2-烯-1-酮5,可以通过诸如NaOH和叔胺之类的常见碱来影响该质子的现成提取。