Enantioselective synthesis of unsaturated α-hydroxy acids
作者:Jacqueline A. Macritchie、Alan Silcock、Christine L. Willis
DOI:10.1016/s0957-4166(97)00571-5
日期:1997.12
(S)- and (R)-2-Hydroxyhex-5-enoic acid and (S)- and (R)-2-hydroxyhept-6-enoic acid were prepared in excellent yields and enantiomeric excesses (>99% ee) from the corresponding α-keto esters by the enzyme catalysed hydrolysis of the ester and reduction of the ketone in a single pot process. The enantioselectivesynthesis of (S)-2-hydroxypent-4-enoic acid was achieved via reaction of the reagent derived
Synthesis of Vinyllactones via Allylic Oxidation of Alkenoic Acids
作者:Jörg Pietruszka、Martina Bischop
DOI:10.1055/s-0031-1289549
日期:2011.11
A one-step access to vinyllactones is described utilizing the Pd-catalyzed allylic oxidation of alkenoic acids. The influence of ring size as well as the olefin configuration is investigated culminating in the synthesis of goniothalamin analogues.