Compounds and Methods for Catalytic Directed ortho Substitution of Aromatic Amides and Esters
申请人:Zhao Yigang
公开号:US20120302752A1
公开(公告)日:2012-11-29
Methods are described for efficient and regioselective reactions that are Ru-catalyzed and either (i) amide-directed C—H, C—N, C—O activation/C—C bond forming reactions, (ii) ester-directed C—O and C—N activation/C—C bond forming reactions, or (iii) amide-directed C—O activation/hydrodemethoxylation reactions. All of these reactions of directed C—H, C—N, C—O activation/coupling reactions establish a catalytic base-free DoM-cross coupling process at non-cryogenic temperature. High regioselectivity, yields, operational simplicity, low cost, and convenient scale-up make these reactions suitable for industrial applications. Many previously unknown amide-substituted or ester-substituted aryl and heteroaryl compounds are presented with synthetic details also provided.
Stanetty, Peter; Krumpak, Barbara; Rodler, Inge K., Journal of Chemical Research, Miniprint, 1995, # 9, p. 2111 - 2122
作者:Stanetty, Peter、Krumpak, Barbara、Rodler, Inge K.
DOI:——
日期:——
Beyond Directed <i>Ortho</i> Metalation: Ruthenium-Catalyzed Amide-Directed C<sub>Ar</sub>–N Activation/C–C Coupling Reaction of Anthranilamides with Organoboronates
作者:Yigang Zhao、Victor Snieckus
DOI:10.1021/ol501180q
日期:2014.6.20
A new, catalytic, and general methodology for the synthesis of biaryls and heterobiaryls by the cross coupling of anthranilamide derivatives (o-NMe2 benzamides) with aryl boroneopentylates is described. The reaction proceeds under catalytic RuH2(CO)(PPh3)3 conditions driven by the activation of the unreactive C–N bond by amide directing group (DG)-Ru catalyst chelation. High regioselectivity, orthogonality