Facile Access to Polysubstituted Indoles via a Cascade Cu-Catalyzed Arylation−Condensation Process
作者:Yu Chen、Xiaoan Xie、Dawei Ma
DOI:10.1021/jo702059q
日期:2007.11.1
hydrolysis delivered 2,3-disubstituted indoles. The halides bearing a strong electron-withdrawing group in the 4-position can undergo in situ basic hydrolysis to provide the corresponding indoles. Polysubstituted indoles can be prepared from substituted 2-halotrifluoroacetanilides with high regioselectivity.
CuI / l-脯氨酸催化的2-卤代三氟乙酰苯胺与β-酮酯和酰胺的交叉偶联,然后进行原位酸性水解,生成了2,3-二取代的吲哚。在4-位带有强吸电子基团的卤化物可进行原位碱性水解以提供相应的吲哚。可以由具有高区域选择性的取代的2-卤代三氟乙酰苯胺制备多取代的吲哚。