Palladium-catalysed hydroarylation and hydrovinylation of 3,3-dialkoxy-1-aryl-1-propynes. An approach to 3-aryl- and 3-vinylquinolines
作者:Sandro Cacchi、Giancarlo Fabrizi、Fabio Marinelli、Leonardo Moro、Paola Pace
DOI:10.1016/0040-4020(96)00557-1
日期:1996.7
Acetylenic acetals and ketals have been reacted with aryl and vinyl halides to generate hydroarylation and hydrovinylation products. The reaction proceeds with high regioselectivity. The carbopalladation step appears to be mainly controlled by steric effects and the new carbon-carbon bond is generated preferentially on the carbon bearing the acetal group. The reaction has been employed to develop a
乙缩醛和缩酮已与芳基和乙烯基卤化物反应生成氢化芳基化和氢化乙烯基化产物。反应以高区域选择性进行。碳纤维化步骤似乎主要受空间效应控制,并且新的碳-碳键优先在带有缩醛基团的碳上生成。该反应已被用于开发3-芳基和3-乙烯基喹啉的区域选择性合成。