Biotransformation-mediated synthesis of (1S)-1-(2,6-dichloro-3- fluorophenyl)ethanol in enantiomerically pure form

Abstract

An efficient four-step biotransformation-mediated synthesis of (1S)-1-(2,6-dichloro-3-fluorophenyl)ethanol in enantiomerically pure form is described. This compound is a key intermediate required for the preparation of PF-2341066, a potent inhibitor of c-Met/ALK that is currently in clinical development. The described synthesis was used to manufacture 6 kg of the title compound and can also be employed to produce the corresponding (1R)-enantiomer. © 2010 Elsevier Ltd. All rights reserved.