ALPHA-OXOCARBOXYLIC ACIDS;
DECARBOXYLATIVE ORTHO-ACYLATION;
OXIDATIVE ORTHO-ACYLATION;
TERT-BUTYL HYDROPEROXIDE;
TOLUENE DERIVATIVES;
BOND ACTIVATION;
DIRECTING GROUP;
DIRECT ACCESS;
6-ARYLPURINE NUCLEOSIDES;
AROMATIC-ALDEHYDES;
D O I:
10.1039/c5ra18447a
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Purinyl N1 directed ortho-acylation of 6-anilinopurines was achieved via C(sp(2))-H bond activation in the presence of [Pd]-catalyst using aldehydes or alpha-oxocarboxylic acids as the acylating source. A wide variety of purine appended 2'-aminoacetophenones/benzophenones are isolated in good to excellent yields. These catalytic transformations are also successfully applied to 6-anilinopurine nucleosides.