enzymatic kinetic resolution of tert-butyl 2-(1-hydroxyethyl)phenylcarbamate, a key intermediate to chiral organoselenanes and organotelluranes

enzymatic kinetic resolution of tert-butyl 2-(1-hydroxyethyl)phenylcarbamate, a key intermediate to chiral organoselenanes and organotelluranes

;Leandro Piovan;Monica D. Pasquini;Leandro H. Andrade
Journal of ethnopharmacology 2011 Vol. 16 pp. 8098-8109
114
piovan2011moleculesenzymatic

Abstract

The enzymatic kinetic resolution of tert-butyl 2-(1-hydroxyethyl) phenylcarbamate via lipase-catalyzed transesterification reaction was studied. We investigated several reaction conditions and the carbamate was resolved by Candida antarctica lipase B (CAL-B), leading to the optically pure (R)- and (S)-enantiomers. The enzymatic process showed excellent enantioselectivity (E > 200). (R)- and (S)-tert-butyl 2-(1-hydroxyethyl)phenylcarbamate were easily transformed into the corresponding (R)- and (S)-1-(2-aminophenyl)ethanols.

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178283
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10.3390/molecules16098098
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