Tetrahedron: Asymmetry

Hydroxynitrile lyase catalyzed enantioselective HCN addition to O-protected α-hydroxyaldehydes

J Roos, F Effenberger

Index: Roos, Juergen; Effenberger, Franz Tetrahedron Asymmetry, 1999 , vol. 10, # 14 p. 2817 - 2828

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Citation Number: 22

Abstract

Various O-protected glycol-and racemic lactaldehydes 3 and 6 as well as O-allyl protected racemic α-hydroxyaldehydes 7 (R1= Et, Pr, Bu) have been prepared to investigate and perform a stereoselective Kiliani–Fischer synthesis by hydroxynitrile lyase (HNL) catalyzed addition of HCN. From all protecting groups investigated the allyl moiety was most suitable.(R)-PaHNL from bitter almonds (Prunus amygdalus), yielding the (2S)- ...

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