Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The regiochemistry in Stille couplings of 2,6-dihalopurines have been studied. 2,6-Dichloropurines react selectively in the 6-position, and 6-chloro-2-iodopurines and 2-bromo-6-chloropurines in the 2-position. ... 2,6-Dichloropurines couple with organotin reagents in the 6-position, ...
