Process for producing ortho-isopropylated phenol derivatives

Details Process for producing ortho-isopropylated phenol derivatives Process for producing ortho-isopropylated phenol derivatives

C - Chemistry, Metallurgy

07

C

C07C 39/06 (2006.01) C07C 37/00 (2006.01) C07C 37/055 (2006.01) C07C 37/48 (2006.01) C07C 37/50 (2006.01) C07C 45/40 (2006.01) C07D 307/83 (2006.01)

Patent

CA 2121434

ABSTRACT This invention relates to the process for producing ortho-isopropylated phenol derivatives having following general formula (VIII). Image (VIII) (in the above formula, R1 is a hydrogen or a low alkyl group of C1-C4) A process for producing ortho-isopropylated phenol derivatives (VIII) of the present invention is characterized by obtaining position isomer desired by means of Claisen rearrangement of phenyl allyl ether without catalyst in atmosphere, and then obtaining only one isomer by oxidation and reduction of the above-obtained position isomer According to the present invention, ortho-alkylated phenol derivatives (VIII) having high purity at low temperature and low pressure can be prepared without producing a by-product and-requirement of the complicated separation procedure.

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