6-Magnesiated Purines: Preparation and Reaction with Aldehydes
作者:Tomáš Tobrman、Dalimil Dvořák
DOI:10.1021/ol0355027
日期:2003.11.1
[reaction: see text] Halogen-metalexchange reaction of 9-benzyl-6-iodopurine with iPrMgCl in toluene at -80 degrees C proceeds almost quantitatively. Such a purine-derived Grignardreagent reacts selectively with aldehydes in toluene, giving the corresponding alcohols in 25-62% yield, while other functional groups such as ketones, esters, and nitriles do not react under these conditions. The reaction
Microwave promoted reaction of purin-6-yl magnesium halides with aldehydes in dichloromethane at 100 °C
作者:Malcolm R. Gordon、Stephen D. Lindell
DOI:10.1016/j.tetlet.2018.04.014
日期:2018.5
a dichloromethane solution of 9-benzyl or 9-phenyl 6-iodopurine with ethereal ethylmagnesium bromide at ambient temperature gives the corresponding purin-6-yl magnesium halides. Addition of an aldehyde followed by heating at 100 °C in a microwave reactor yielded the corresponding carbinols in 52–81% yield.