Favorskii rearrangement of a highly functionalized meso-dihaloketone
作者:Paula M. Tomlin、David J. Davies、Martin D. Smith
DOI:10.1016/j.tetasy.2009.03.020
日期:2009.5
This paper describes studies on the feasibility of an asymmetric Favorskii rearrangement of a meso-dihaloketone substrate. In the racemic series, metal amide bases in the presence of amines give poor to reasonable yields of ring-contracted unsaturated cyclopentyl amides, whilst amines in aqueous solvent mixtures afford cyclopentyl amides in good to excellent yields. A range of chiral non-racemic amines