Process for the preparation of hydroxyphenylcarboxylates

Details Process for the preparation of hydroxyphenylcarboxylates Process for the preparation of hydroxyphenylcarboxylates

C - Chemistry, Metallurgy

07

C

C07C 69/732 (2006.01) C07C 67/02 (2006.01) C07C 67/03 (2006.01)

Patent

CA 2080429

There is disclosed a process for the preparation of compounds of formula I (See formula I) wherein R1 and R2 are each independently of the other C1-C8alkyl, m is 0, 1, 2 or 3; n is 1 or 2, and A, if n = 1, is OR3, and R3 is C4-C20alkyl or C5-C12cycloalkyl, or A , if n = 2; has the formula -O-C x H2-x-O- or -O-(CH2CH2O)a CH2CH2O-, x is a number from 2 to 8 and a is a number from 1 to 12, by reacting a compound of formula II (See formula II) with a compound of formula III A~(~H)n , ~(III) the reaction being earned out in the presence of an aluminium trialcoholate or triphenolate as catalyst.

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