SCH, XXXV aminopurine could not be prepared by coupling of 2, 4- dichlorobenzenediazonium chloride with adenine or hypoxanthine followed by the usual sodium hydrosulfite reduction to introduce the 8-anlino group. This reaction however is quite successful for the introduction of the 8-amino group into xanthine, 3 guanine3 and isoguanine. 14 In the search for a new method of preparing 6-substituted-8-aminopurines ...
