Method for producing 2,6-di-tert.-butyl-4-cumyl phenol

Details Method for producing 2,6-di-tert.-butyl-4-cumyl phenol Method for producing 2,6-di-tert.-butyl-4-cumyl phenol

1974-08-21

1976-01-20

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260624R, 260624C, C07C 3906

Patent

active

039339289

ABSTRACT:
2,6-DI-TERT.-BUTYL-4-CUMYL PHENOL IS PRODUCED BY REACTING P-CUMYL PHENOL WITH ISOBUTYLENE, AT A REACTION TEMPERATURE OF FROM 40.degree. TO 120.degree.C. in the presence of from 0.01 to 20% by weight of p-toluene sulfonic acid based on the weight of the p-cumyl phenol. Isobutylene is charged into the reaction system at a high rate and is always present in the reaction system during the reaction. A substantially 100% conversion of p-cumyl phenol is attained and the weight ratio of 2,6-di-tert.-butyl-4-cumyl phenol/2-tert.-butyl-4-cumyl phenol in the reaction product is greater than 10, while splitting off of the cumyl group at the para position is suppressed.

REFERENCES:
patent: 3116336 (1963-12-01), Van Winkle
patent: 3177259 (1965-04-01), Van Winkle
patent: 3711559 (1973-01-01), Ensvr

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