A concise synthesis of highly enantiomerically enriched 2-alkylparaconic acid esters via ruthenium-catalyzed asymmetric hydrogenation of acylsuccinates
摘要:
The catalytic asymmetric hydrogenation of acylsuccinates using RuCl3 as a precalalyst and atropisomeric diphosphines as chiral auxiliaries allows the synthesis of optically active 2-alkylparaconic acid esters in preparative yields with enantioselectivities up to 99.5% ee. (C) 2009 Elsevier Ltd All rights reserved