Dioxygen-Mediated Decarbonylative CH Alkylation of Heteroaromatic Bases with Aldehydes
作者:Subhasis Paul、Joyram Guin
DOI:10.1002/chem.201503809
日期:2015.12.1
An operationally simple and economical method for the direct alkylation of heteroaromaticbases employing readily available aldehydes as alkyl radical precursors and molecular oxygen as a reagent is presented. This simple transformation demonstrates a broad substrate scope with respect to aldehydes and nitrogen heterocycles, enabling the introduction of several medicinally important yet challenging
general alkylation of heterocycles using a simple palladium catalyst is reported. Most classes of heterocycles, including indoles and pyridines, efficiently coupled with unactivated secondary and tertiary alkylhalides. An alkyl radical addition to neutral heteroarenes is most likely involved.