Patent ID: 7005533
Filing Date: 2006-02-28
Classification: C07F

Abstract:
1. A method of preparation of compounds represented by formula (I): wherein the method comprises the following steps: (a) contacting a least one acid halide represented by formula (II): with at least one phosphite represented by formula (V): wherein: X represents a halogen atom, A represents a group of formula —(CH n is a whole number from 0 to 24 inclusive, R R R to form an α-ketophosphonate represented by formula (III): wherein A, R 1 and R 2 are as defined above; (b) contacting the α-ketophosphonate obtained in the previous step with at least one silyl phosphite represented by formula (IV): wherein: alk is a C x is equal to 2 or 3, R (c) hydrolysis of the compounds obtained in the previous step.