A direct selenation of inert C–H bonds of benzamide derivatives and their related compounds with diselenides has been achieved with the palladium catalyst. The reaction was compatible with a variety of functional groups, including a bromo group. Primitive mechanistic insights revealed that the reaction proceeded through a C–H bond cleavage and the sequential oxidativeaddition of diselenides. The present
Copper-Promoted Sulfenylation of sp<sup>2</sup> C–H Bonds
作者:Ly Dieu Tran、Ilya Popov、Olafs Daugulis
DOI:10.1021/ja3092278
日期:2012.11.7
An auxiliary-assisted, copper catalyzed or promoted sulfenylation of benzoic acid derivative beta-C-H bonds and benzylamine derivative gamma-C-H bonds has been developed. The method employs disulfide reagents, copper(II) acetate, and DMSO solvent at 90-130 degrees C. Application of this methodology to the direct trifluoromethylsulfenylation of C-H bonds was demonstrated.
Directed Amination of Non-Acidic Arene CH Bonds by a Copper-Silver Catalytic System
作者:Ly Dieu Tran、James Roane、Olafs Daugulis
DOI:10.1002/anie.201300135
日期:2013.6.3
Amine meets arene: A method for direct amination of β‐C(sp2)Hbonds of benzoic acid derivatives and γ‐C(sp2)Hbonds of benzylamine derivatives has been developed. The reaction is catalyzed by Cu(OAc)2 and a Ag2CO3 cocatalyst, and shows high generality and functional‐group tolerance, as well as providing a straightforward means for the preparation of ortho‐aminobenzoic acid derivatives.
胺遇到芳烃:已经开发了一种直接胺化苯甲酸衍生物的 β-C(sp 2 ) H 键和苄胺衍生物的γ-C(sp 2 ) H 键的方法。该反应由Cu(OAc) 2和Ag 2 CO 3助催化剂催化,具有高度的通用性和官能团耐受性,并为制备邻氨基苯甲酸衍生物提供了一种直接的方法。