Palladium-Catalyzed Aryl Amination Reactions of 6-Bromo- and 6-Chloropurine Nucleosides
作者:Paul F. Thomson、Pallavi Lagisetty、Jan Balzarini、Erik De Clercq、Mahesh K. Lakshman
DOI:10.1002/adsc.200900728
日期:——
ribonucleosides and the 2'-deoxy analogues with aryl amines are described. Efficient conversions were observed with Pd(OAc)(2)/Xantphos/Cs(2)CO(3), in PhMe at 100 degrees C. Reactions of the bromo nucleoside derivatives could be conducted at a lowered catalytic loading (5 mol % Pd(OAc)(2)/7.5 mol % Xantphos), whereas good product yields were obtained with a higher catalyst load (10 mol % Pd(OAc)(2)/15