15889-98-2Relevant articles and documents
Titanocene-Catalyzed Reduction of Lactones to Lactols
Verdaguer, Xavier,Hansen, Marcus C.,Berk, Scott C.,Buchwald, Stephen L.
, p. 8522 - 8528 (2007/10/03)
A convenient method for the conversion of lactones to lactols is described. The hydrosilylation to lactols is carried out via air-stable titanocene difluoride or a titanocene diphenoxide precatalyst using inexpensive polymethylhydrosiloxane (PMHS) as the stoichiometric reductant. These procedures have been demonstrated with a variety of substrates and proceed in good to excellent yield.
Novel Synthesis of (R)-(+)-γ-Butyrolactone-γ-3-propionates by Fermenting Baker's Yeast and Enantiomeric Purity Determination Using NMR Technique
Moriuchi, Fumio,Muroi, Hisae,Aibe, Hiroshi
, p. 1141 - 1144 (2007/10/02)
Optically pure (R)-(+)-γ-butyrolactone-γ-3-propionates 1 were prepared by reducing the precourser, 3-ketoheptane-1,5-dicarboxylic acid monoesters, with fermenting baker's yeast.The optical purity (more than 98percent) was determined by means of HPLC analysis and NMR determination.