Regioselective arylation of uracil and 4-pyridone derivatives via copper(I) bromide mediated C–H bond activation
作者:Chien Cheng、Yu-Chiao Shih、Hui-Ting Chen、Tun-Cheng Chien
DOI:10.1016/j.tet.2012.11.001
日期:2013.1
A facile and effective synthesis of 6-aryluracil derivatives was accomplished by the direct C H bond activation for arylation. A series of 6-aryl-1,3-dimethyluracils were synthesized from the reaction of 1,3-dimethyluracil with various phenyl iodides in DMF, in the presence of copper(I) bromide as the catalyst and lithium tert-butoxide as the base. This methodology is applicable to a variety of 5-substituted uracils as well as 4-pyridone to provide direct accesses to versatile uracil and 4-pyridone derivatives. (C) 2012 Elsevier Ltd. All rights reserved.