1031883-61-0Relevant articles and documents
Stereoselective synthesis of (2S,4R)-4-hydroxypipecolic acid
Occhiato, Ernesto G.,Scarpi, Dina,Guarna, Antonio
, p. 524 - 531 (2008/09/18)
A new synthetic route to enantiopure (2S,4R)-4-hydroxypipecolic acid from commercial ethyl (3S)-4-chloro-3-hydroxybutanoate is reported. The synthesis is based on the Pd-catalyzed methoxycarbonylation of a 4-alkoxy-substituted δ-valerolactam-derived vinyl triflate followed by the stereocontrolled hydrogenation of the enamine double bond. The final product was obtained after exhaustive hydrolysis in 20 % yield over 10 steps. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.