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2005
Cyclopentane derivatives
Q 0030
Hydroxynitrile Lyase-Catalyzed Addition of HCN to 2-Substituted Cyclopenta— A systematic study concerning the stereoselectivity of the title reaction using
14- 073 nones.
hydroxynitrile lyases derived from cassava (MeHNL) and bitter almond (PaHNL) is
presented. The conversion and the ratio of each of the four possible stereoisomeric
cyanohydrins are determined by gas chromatography of the acetylated reaction mixtures. In addition, it is shown that oxocyclopentylesters (V) are excellent substrates for
MeHNL but not for PaHNL. — (KOBLER, C.; EFFENBERGER*, F.; Tetrahedron:
Asymmetry 15 (2004) 23, 3731-3742; Inst. Org. Chem., Univ. Stuttgart, D-70569
Stuttgart, Germany; Eng.) — Klein
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