Patent ID: 6803476
Filing Date: 2004-10-12
Classification: C07F

Abstract:
A method comprising:reacting a compound of the general formula R14âˆ’mMOR3m wherein m is an integer from 2 to 4, OR3 is an alkoxy group, and M is an element selected from group 14 of the periodic table; with a compound of the general formula R2X2+Mg, wherein X2 is Br or I; where R1 and R2 are independently selected from alkyl, alkenyl, aryl, alkynyl or epoxy, and wherein at least one of R1 and R2 is partially or fully fluorinated; so as to make a compound of the general formula R2R14âˆ’mMOR3mâˆ’1; followed by reacting R2R14âˆ’mMOR3mâˆ’1 with a halogen or halogen compound in order to replace one or more OR3 groups with a halogen group so as to form R2R14âˆ’mMOR3mâˆ’1âˆ’nXn, where X is a halogen and n is from 1 to 3 and m>n, except where R1 is fluorinated phenyl, M is Si and OR3 is ethoxy.