作者:Roberto Sanz、Delia Miguel、Alberto Martínez、Julia M. Álvarez-Gutiérrez、Félix Rodríguez
DOI:10.1021/ol070624a
日期:2007.5.1
The direct alkylation of 1,3-dicarbonyl compounds with benzylic alcohols is shown to be efficiently catalyzed by simple Bronsted acids such as triflic acid (TfOH) and p-toluenesulfonic acid (PTS) to give rise to monoalkylated dicarbonyl derivatives in high yields. In the absence of the nucleophile, substituted alkenes, generated through a formal dimerization reaction, are obtained. The reactions are
已表明,通过简单的布朗斯台德酸(例如三氟甲磺酸(TfOH)和对甲苯磺酸(PTS))可以有效地催化1,3-二羰基化合物与苄醇的直接烷基化反应,从而以高收率产生单烷基化二羰基衍生物。在不存在亲核试剂的情况下,获得了通过正式的二聚反应生成的取代的烯烃。反应是在空气中使用未干燥的溶剂进行的,而水是该方法的唯一副产物。