Issue 7, 2015

Chemoselective efficient synthesis of functionalized β-oxonitriles through cyanomethylation of Weinreb amides

Abstract

A synthesis of β-oxonitriles is reported via the generation of R1R2CLiCN species followed by the trapping with variously decorated Weinreb amides. The optimization study revealed that lithiation of acetonitriles is best accomplished by deprotonation with MeLi–LiBr at low temperature. The protocol can be conveniently adapted to the synthesis of α-mono or α,α-disubstituted cyanoketones. 15N- and 17O-NMR data are reported for selected compounds.

Graphical abstract: Chemoselective efficient synthesis of functionalized β-oxonitriles through cyanomethylation of Weinreb amides

Supplementary files

Article information

Article type
Communication
Submitted
13 Nov 2014
Accepted
09 Dec 2014
First published
09 Dec 2014

Org. Biomol. Chem., 2015,13, 1969-1973

Author version available

Chemoselective efficient synthesis of functionalized β-oxonitriles through cyanomethylation of Weinreb amides

A. D. Mamuye, L. Castoldi, U. Azzena, W. Holzer and V. Pace, Org. Biomol. Chem., 2015, 13, 1969 DOI: 10.1039/C4OB02398F

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