H BOND ACYLATION;
OXIDATIVE ORTHO-ACYLATION;
C COUPLING REACTION;
TOLUENE DERIVATIVES;
CATALYTIC CYCLE;
ACTIVATION;
ALDEHYDES;
FUNCTIONALIZATION;
ACETANILIDES;
AROYLATION;
D O I:
10.1039/c5gc02554k
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Supported palladium nanoparticles are used as efficient catalysts for the synthesis of aromatic ketones via cross dehydrogenative coupling reactions of 2-arylpyridines with alkylbenzenes. The catalyst can be reused for five cycles without significantly losing activity. Mechanism research showed that alkylbenzenes were oxidized to their corresponding aldehydes and subsequently coupled with 2-arylpyridines to generate aryl ketones through a Pd-0/Pd-II/Pd-IV catalytic cycle.