Process for separating chlorinated phenols

Details Process for separating chlorinated phenols Process for separating chlorinated phenols

1982-04-26

1984-01-31

Lone, Werren B.

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

Organic compounds

Oxygen containing

568750, 568774, C07C 3768

Patent

active

044291680

ABSTRACT:
A process is disclosed for separating closely-boiling chlorinated phenolic compounds from other chlorinated and unchlorinated phenolics by treating a mixture of the phenolics with a metal halide salt. The metal halide salt preferentially forms a complex with one of the phenolics over other related closely-boiling phenolics in the mixture. The preferentially-formed complex of one of the phenolics may then be isolated from the mixture and the complex decomposed to provide a product substantially enriched in, or substantially entirely composed of, one phenolic. The process is particularly suitable for resolving a mixture comprising phenol or cresol from their closely-boiling ortho-chlorinated derivatives, or a mixture of two isomeric chlorinated phenols or cresols or a mixture of closely-boiling mono- and dichlorinated phenols or cresols.

REFERENCES:
patent: 3772394 (1973-11-01), Milnes
patent: 4228309 (1980-10-01), Hatcher
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: 4366329 (1982-12-01), Raynolds
Sharpless et al. "J. Org. Chem." vol. 40, (1975) 1252-1257.

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