time-economical TfOH-catalyzed N–H insertion between anilines and α-alkyl and α-aryl-α-diazoacetates provides a straightforward approach to access unnatural α-amino esters, which readily undergo various transformations and can thus be used for the synthesis of pharmaceutically relevant molecules. The α-amino esters were obtained in moderate to excellent yields.
Rhodium(II)-Catalyzed N–H Insertions of Carbenes under Mechanochemical Conditions
作者:Sourav Biswas、Carsten Bolm
DOI:10.1021/acs.orglett.4c00216
日期:2024.2.23
Undermechanochemicalconditions in a mixer mill, Rh2(OAc)4 catalyzes the reaction between aryldiazoesters and anilines to give α-amino esters. The process proceeds under mild conditions and is insensitive to air. It is solvent-free and scalable. A broad substrate scope, short reaction times, operational simplicity, and good functional group tolerance are additional salient features of this protocol