Diastereoselective Synthesis of Aliphatic α,α-Difluoro-β<sup>3</sup>-Amino Esters via a Sonocatalyzed Reformatsky Reaction
作者:Taryn L. March、Martin R. Johnston、Peter J. Duggan
DOI:10.1021/ol202969w
日期:2012.1.6
(R)-2-Phenylglycine ethyl ester was found to be a cheap and effective auxiliary for the preparation of aliphatic α,α-difluoro-β3-amino esters via a Reformatskyreaction performed under sonication conditions. The products were obtained in good to high yield and ≥96:4 dr, thus providing a new stereoselective route to this under-represented class of compounds. A facile one-pot removal of the phenylglycine