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Direct Synthesis of 6-Arylpurines by Reaction of 6-Chloropurines with Activated Aromatics

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journal contribution
posted on 03.09.2010, 00:00 by Hai-Ming Guo, Pu Li, Hong-Ying Niu, Dong-Chao Wang, Gui-Rong Qu
Highly functionalized C6-aryl-substituted purine analogues were synthesized through direct arylation of 6-chloropurine with aromatics promoted by anhydrous AlCl3 in a single step. The reactions, which were conducted using a 3-fold excess of AlCl3 in refluxing 1,2-dichloroethane, gave moderate to excellent product yields in 0.5 h. This work is complementary to the classical coupling reactions for the synthesis of C6-aryl-substituted purine analogues.