Complex formed for separating isopropylated m-cresols

Details Complex formed for separating isopropylated m-cresols Complex formed for separating isopropylated m-cresols

1984-01-03

1984-09-04

Lone, Werren B.

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

Organic compounds

Oxygen containing

568700, 568701, 568716, C07C 3906

Patent

active

044699018

ABSTRACT:
A process is disclosed for separating 5-isopropyl-m-cresol from other isopropylated m-cresols by treating a mixture of the isopropylated m-cresols with a metal halide salt. The metal halide salt preferentially forms a complex with 5-isopropyl-m-cresol over other related closely-boiling isopropylated m-cresols in the mixture. The preferentially-formed complex of 5-isopropyl-m-cresol may then be isolated from the mixture and the complex decomposed to provide a product substantially enriched in, or substantially entirely composed of, 5-isopropyl-m-cresol. The process is particularly suitable for isolating 5-isopropyl-m-cresol from closely-boiling isomers, and di-isopropylated m-cresols.

REFERENCES:
patent: 4267389 (1981-05-01), Leston
patent: 4267390 (1981-05-01), Leston
patent: 4267391 (1981-05-01), Leston
patent: 4267392 (1981-05-01), Leston
patent: 4394526 (1983-07-01), Leston
patent: 4423253 (1983-12-01), Leston
patent: 4429169 (1984-01-01), Leston
Sharpless et al., "Jour. Org. Chrm.," vol. 40, No. 9, (1975), pp. 1252-1257.

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