Cross-Coupling Reactions of Halopurines with Aryl- and Alkyltrifluoroborates; The Scope and Limitations in the Synthesis of Modified Purines
作者:Michal Hocek、Zbyněk Hasník、Radek Pohl
DOI:10.1055/s-0028-1088038
日期:2009.4
The scope and limitations of the use of the palladium-catalyzed cross-couplingreactions of diverse alkyl- and aryltrifluoroborates with halopurines have been studied. While aryl- and hetaryltrifluoroborates reacted readily with both 6-chloropurines and 8-bromoadenines to give the corresponding 6- or 8-aryl derivatives in high yields, the alkyltrifluoroborates were much less reactive and, even after