Selective alkylation of 2,5-xylenol in the presence of 2,4-xylen

Details Selective alkylation of 2,5-xylenol in the presence of 2,4-xylen Selective alkylation of 2,5-xylenol in the presence of 2,4-xylen

1980-06-12

1981-09-29

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568793, 568750, C07C 3711

Patent

active

042924502

ABSTRACT:
A mixture of 2,4-/2,5-xylenol can be alkylated with a suitable alkylating agent over a strongly acidic divinylbenzene-styrene copolymer to afford a greater amount of 4-t-alkyl-2,5-xylenol than 6-t-alkyl-2,4-xylenol provided the alkylation is carried out at a suitably low temperature of 60.degree. C. or less.

REFERENCES:
patent: 2497971 (1950-02-01), Basterfield
patent: 2793239 (1957-05-01), Toland
patent: 2802884 (1957-08-01), D'Alelio
patent: 3308168 (1967-03-01), O'Neil
patent: 3584058 (1971-06-01), Hahn
patent: 4228311 (1980-10-01), Dodd
patent: 4229598 (1980-10-01), Weimer

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