N-Heterocyclic Carbene-Catalyzed Cross-Coupling of Aromatic Aldehydes with Activated Alkyl Halides
作者:Mohan Padmanaban、Akkattu T. Biju、Frank Glorius
DOI:10.1021/ol102626p
日期:2011.1.7
N-Heterocyclic carbene-catalyzed umpolung of aldehydes followed by their interception with diarylbromomethanes has been reported. This conceptually novel transition-metal-free cross-coupling of aldehydes with alkyl halides works well at low catalyst loadings and under mild reaction conditions leading to the formation of diaryl acetophenone derivatives in good yields. In addition, a-halo ketones and esters can also be used, as aldehyde reaction partners.