A Highly Selective Palladium-Catalyzed Aerobic Oxidative Aniline–Aniline Cross-Coupling Reaction
作者:Kenji Matsumoto、Satoshi Takeda、Tsukasa Hirokane、Masahiro Yoshida
DOI:10.1021/acs.orglett.9b02527
日期:2019.9.20
The first catalytic oxidative aniline-aniline cross-coupling reaction using oxygen as the terminal oxidant is reported. Anilines possessing a pyrrolidino group can be preferentially oxidized under mild aerobic conditions and reacted with other anilines to afford a variety of nonsymmetrical 2-aminobiphenyls with high selectivities. A heterogeneous palladium catalyst is used for the dehydrogenative cross-coupling
Dehydrogenative C(sp<sup>3</sup>)–H bond functionalization of tetrahydroisoquinolines mediated by organic oxidants under mild conditions
作者:Zdravko Džambaski、Bojan P. Bondžić
DOI:10.1039/c9ob01090d
日期:——
The organocatalyzed Mannich reaction of unsubstituted and N-aryl-substituted tetrahydroisoquinolines (THIQs) and the Strecker reaction of several N-aryl-substituted THIQs through dehydrogenative C(sp3)-H bond functionalization (cross-dehydrogenative coupling) promoted by organic single electron oxidants DDQ and IBX are presented. The C-H oxidation/Mannich reaction of less reactive N-aryl substituted
A third strategy for cross-dehydrogenative coupling reaction has been reported via platinum-catalyzed sp3 C–H and sp3 C–H coupling reaction in the absence of oxidant. Nitroalkanes as well as dialkyl malonate derivatives, β-keto esters and malononitrile are active participants in this coupling reaction. Both cyclic and acyclic non-activated simple ketones are good reactants in this reaction.
The present invention relates to a compound of the general formula (1):
wherein, Y is a methylene group, and the like; A is an optionally substituted heterocyclic group, and the like; B is an optionally substituted phenyl group, and the like; R
1
is an optionally substituted alkyl group, and the like; and R
2
is an optionally substituted amino group, and the like; or a pharmaceutically acceptable derivative thereof, which has an inhibitory activity against cholesteryl ester transfer protein (CETP), thereby being useful for prophylaxis and/or treatment of arteriosclerotic diseases, hyperlipemia or dyslipidemia, and the like.
The present invention relates to a compound of the general formula (1):
wherein, Y is a methylene group, and the like; A is an optionally substituted heterocyclic group, and the like; B is an optionally substituted phenyl group, and the like; R
1
is an optionally substituted alkyl group, and the like; and R
2
is an optionally substituted amino group, and the like; or a pharmaceutically acceptable derivative thereof, which has an inhibitory activity against cholesteryl ester transfer protein (CETP), thereby being useful for prophylaxis and/or treatment of arteriosclerotic diseases, hyperlipemia or dyslipidemia, and the like.