Enantiomerically Pure <i>trans</i>-β-Lactams from α-Amino Acids via Compact Fluorescent Light (CFL) Continuous-Flow Photolysis
作者:Yvette S. Mimieux Vaske、Maximillian E. Mahoney、Joseph P. Konopelski、David L. Rogow、William J. McDonald
DOI:10.1021/ja1050023
日期:2010.8.18
beta-lactams has been shown to vary from modest to nearly complete. An extremely facile, atom-economical method for the epimerization of the product mixture to the trans isomer, which is generally highly crystalline, has been developed. Evidence for C3 epimerization of Weinreb amide structures via a nonbasic, purely thermal route is presented. Subsequent transformations of both the Weinreb amide at C3 (beta-lactam