Process for preparing intermediates for the synthesis of...

Details Process for preparing intermediates for the synthesis of... Process for preparing intermediates for the synthesis of...

C - Chemistry, Metallurgy

12

P

C12P 7/62 (2006.01)

Patent

CA 2240408

A process for producing a crystalline chiral hydroxy ester of formula (1.0) is disclosed. The process comprises reacting a diol of formula (2.0), with an effective amount of isobutyric anhydride and an effective amount of a lipase enzyme in an effective amount of acetonitrile, said reaction being conducted at a low temperature, and wherein X1 and X2 are each independently selected from F or Cl.

Ce procédé de production d'un ester hydroxy chiral cristallin de formule (1.0) consiste à faire réagir un diol de formule (2.0) avec une quantité efficace d'un anhydride isobutyrique et une quantité efficace d'une enzyme, une lipase, dans une quantité efficace d'acétonitrile, cette réaction intervenant à basse température, et X<1> et X<2> étant chacun choisis indépendamment entre F et Cl.

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