Patent ID: 8273910

Claim:
A process for preparing a silylated monocarboxylic acid by reacting a C 2 -C 10 -monocarboxylic acid with a halosilane of the general formula (I) SiHal 4-x R x (I) in which Hal is a halogen atom selected from the group consisting of fluorine, chlorine, bromine and iodine, R is independently hydrogen, C 1 -C 10 -alkyl or aryl and x is an integer of 0 to 3 to form a hydrogen halide in the presence of an auxiliary base, wherein the auxiliary base and the hydrogen halide form a salt, which is liquid at the temperatures at which the product of value is separated from the salt, and which forms two immiscible phases with the product of value or the solution of the product of value in a suitable solvent and is removed, wherein the auxiliary base is selected from the group consisting of 1-methylimidazole, 1-n-butylimidazole, 2-methylpyridine and 2-ethylpyridine.