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.
Controlled C-5 Chlorination and Dichlorohydrin Formation of Uracil Ring with HCl/DMF/Oxone<sup>��</sup>System
作者:Hyun-Seung Lee、Hyun-Ju Lee、Ka-Young Lee、Jae-Nyoung Kim