Process for the preparation of substituted phenols

Details Process for the preparation of substituted phenols Process for the preparation of substituted phenols

C - Chemistry, Metallurgy

07

C

260/622, 260/313

C07C 67/317 (2006.01) C07C 37/50 (2006.01) C07C 39/06 (2006.01) C07C 69/732 (2006.01) C07D 249/20 (2006.01)

Patent

CA 2027209

The substituent X in the phenols of formula (see formula I) wherein R1 to R4 are hydrogen or unsubstituted or substituted alkyl, alkenyl or alkynyl, and X is secondary or tertiary alkyl of 3 to 9 carbon atoms, can be removed by heating said phenols in the presence of an alkali metal hydrogensulfate.

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