Tetrahedron Asymmetry p. 239 - 246 (1994)
Update date:2022-08-12
Topics:
Suzuki
Kasai
Minamiura
A novel enzyme dehalogenating halohydrins, designated as halohydrin dehydo-dehalogenase (HDDase), was purified from Alcaligenes sp. DS-S-7G. The enzyme catalyzed oxidative dehalogenation of (R)-3-chloro-1,2-propanediol [monochlorohydrin (MCH)] to acetic acid and formaldehyde via hydroxyacetone stereoselectively by the addition of artificial electron acceptors. The dehalogenating activity was much higher in the presence of 2,6- dichlorophenolindophenol (DCIP) and phenazine methosulfate (PMS). The resulting stereoselective dehydro-dehalogenation was applicable to preparation of various optically active halohydrins and 1,2-diols so that the respective residual isomers had excellent enantiomeric excesses (ee) (60-99% ee).
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