Rhodium-Catalyzed Synthesis of Amides from Aldehydes and Azides by Chelation-Assisted CH Bond Activation
作者:Bing Zhou、Yaxi Yang、Jingjing Shi、Huijin Feng、Yuanchao Li
DOI:10.1002/chem.201301168
日期:2013.8.5
CH activation: A RhIII‐catalyzed direct aldehyde CH amidation has been achieved with sulfonyl, aryl, and alkyl azides as the amine sources, and release of N2 as the only byproduct (see scheme). More importantly, this catalytic reaction proceeds in the absence of external oxidants or additives, under mild conditions, at neutral pH under air. This reaction represents a new avenue for practical intermolecular
Rhodium(III)-Catalyzed Intermolecular Direct Amidation of Aldehyde C–H Bonds with <i>N</i>-Chloroamines at Room Temperature
作者:Bing Zhou、Juanjuan Du、Yaxi Yang、Yuanchao Li
DOI:10.1021/ol400921r
日期:2013.6.21
A Rh(III)-catalyzed direct aldehyde C–Hamidation from aldehydes and N-chloroamines, prepared in situ from amines, has been developed via C–H bond activation under very mild reaction conditions. A variety of primary and secondary amines were used to afford the corresponding amides in moderate to excellent yields.