Indole[1,2-c]quinazolines by Palladium-Catalyzed Cyclization of Bis(o-trifluoroacetamidophenyl) acetylene with Aryl and Vinyl Halides or Triflates
作者:Antonio Arcadi、Sandro Cacchi、Alberto Cassetta、Giancarlo Fabrizi、Luca M. Parisi
DOI:10.1055/s-2001-17458
日期:——
6-Trifluoromethyl-12-aryl(vinyl)indolo[1,2-c]quinazolines are prepared in high yield through the palladium-catalyzed reaction of readily available bis(o-trifluoroacetamidophenyl)acetylene with aryl or vinyl halides and triflates, followed by cyclization of the resultant derivatives. The reaction, which tolerates a variety of important functional groups, probably involves the formation of a 3-aryl-
6-三氟甲基-12-芳基(乙烯基)吲哚并[1,2-c]喹唑啉是通过容易获得的双(邻三氟乙酰氨基苯基)乙炔与芳基或乙烯基卤化物和三氟甲磺酸酯的钯催化反应以高收率制备的,然后是所得衍生物的环化。该反应可以耐受各种重要的官能团,可能涉及形成 3-芳基-2-(邻三氟乙酰氨基苯基)吲哚中间体,然后环化为吲哚喹唑啉产物。吲哚喹唑啉核的形成已通过 X 射线分析明确确定。