Herein, we describe a simple and general multi-component synthesis of 5-arylselanyluracils by the regioselective C–H selenation of uracils. Reactions of uracils with arylboronic acid and Se powder in the presence of AgNO3 (10 mol%) at 120 °C under aerobic conditions afforded various 5-arylselanyluracils. The source of the introduced selanyl group was prepared from a commercially available arylboronic
Direct regioselective arylsulfenylation and arylselenenylation at 5-position of uracils mediated by silver reagents
作者:Chun Ho Lee、Yong Hae Kim
DOI:10.1016/s0040-4039(00)79934-5
日期:1991.5
Electrophilic additions of phenylsulfenyl chloride or phenylselenenyl chloride to a carbon-carbon double bond of C-5,6 region of uracils in the presence of silver reagents such as Ag2O, AgBF4, or AgOCOCF3 directly gave the corresponding 5-phenylsulfydryl- or 5-phenylselenenyl uracils in good yields.