Reduction of o-ethylphenol in m,p-cresol by preferential t-butyl

Details Reduction of o-ethylphenol in m,p-cresol by preferential t-butyl Reduction of o-ethylphenol in m,p-cresol by preferential t-butyl

1982-05-24

1984-02-14

Lone, Werren B.

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

Organic compounds

Oxygen containing

568751, 568783, C07C 3768

Patent

active

044318464

ABSTRACT:
A process is disclosed for reducing the concentration of o-ethylphenol in m,p-cresol by partially t-butylating a mixture of the above and equilibrating the resultant mixture to convert o-ethylphenol and its 6-t-butyl derivative to the thermodynamically most stable 4-t-butyl-o-ethylphenol. The resultant mixture may then be separated by fractional distillation to isolate m,p-cresol low in o-ethylphenol, optionally, the mono-t-butylated derivatives of m,p-cresol and leave behind the 4-t-butyl-o-ethylphenol, along with di-t-butylated derivatives of all the phenols.

REFERENCES:
patent: 2297588 (1942-09-01), Stevens et al.
patent: 2435087 (1948-01-01), Luten
patent: 2497972 (1950-02-01), Basterfield
patent: 3534111 (1970-10-01), Hess
patent: 4149026 (1981-02-01), Dodd
Stevens, "Industrial and Engineering Chemistry", vol. 35, No. 6, (1943), pp. 655-660.

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