A Reformatsky-type reaction has been developed using iron catalysis in acetonitrile or DMF. Reduction of iron(II) bromide by manganese metal in acetonitrile provides a low-valent iron catalyst, which is the active species; under these conditions, α-chloroesters or nitriles can both be converted into their corresponding derivatives. The method was applicable to both ketones and aldehydes, resulting in the formation of β-hydroxyesters under mild conditions.
SYNTHESIS OF 4-SUBSTITUTED-1,5-DIHYDRO-2H-PYRROL-2-ONES, POTENTIAL SYNTHONS FOR THE PREPARATION OF RADIOLABELED 3-SUBSTITUTED-γ-AMINO ACIDS
作者:Claude Vaccher
DOI:10.1081/scc-100104059
日期:2001.1
The preparation of 4-substituted-1,5-dihydro-2H-pyrrol-2-ones is described. Those compounds can constitute precursors for radiolabeled 3-substituted-γ-amino acids, whose “cold” analogues show a good and specific affinity for the GABABreceptor.