Selective Magnesiation of Chloro-iodopurines: An Efficient Approach to New Purine Derivatives
作者:Tomáš Tobrman、Dalimil Dvořák
DOI:10.1021/ol053013w
日期:2006.3.1
selective I/Mg exchange reaction with iPrMgCl at -80 degrees C. The reaction course at 0 degrees C is different. Magnesiation of 1 proceeds with the migration of magnesium to the 8 position of the purine nuclei. In the case of 4, substitution of iodine with an alkyl group from the Grignard reagent accompanied with a Cl/Mg exchange reaction takes place, and 6-alkyl-2-magnesiated purines (9) are formed