Picolinate-Directed Arene <i>meta</i>-C–H Amination via FeCl<sub>3</sub> Catalysis
作者:Raghunath Reddy Anugu、Sailu Munnuri、John R. Falck
DOI:10.1021/jacs.9b13753
日期:2020.3.18
Direct C-H functionalization of aromatic compounds is a powerful tool for organic synthesis; however, differentiation amongst the ubiquitous and often chemically similar C-H bonds remains a significant challenge. Conflation with coordinating or directing groups incorporated into the intended substrate has helped address these limitations, although access to remote sites remains limited. Herein, we
Transesterification for Synthesis of Carboxylates Using Aldehydes as Acyl Donors via C–H and C–O Bond Activations
作者:Yong-Sheng Bao、Chao-Yue Chen、Zhi-Zhen Huang
DOI:10.1021/jo3012573
日期:2012.9.21
A new type of transesterification between aryl, heteroaryl, alkyl N-heteroarene-2-carboxylates and various aldehydes by C–H and C–O bondactivations has been developed for the synthesis of versatile carboxylates. A possible mechanism containing oxidative addition of acyl–O bond in parent ester and radical cleavage of sp2 C–Hbond in aldehyde is proposed.