Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1983-03-16
1984-10-30
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568780, 568782, 568774, 568779, 568799, 564396, 564442, C07C 3700, C07C 3906
Patent
active
044801408
ABSTRACT:
Phenols alkylated in the ortho and/or para positions are produced in good yields and in the absence of isomers from phenolic compounds having at least two alkylateable ortho-ortho or ortho-para positions open. The phenolic compound is first partially chlorinated or brominated and the desired halogenated phenol having at least one open position ortho or para is reacted with an aldehyde having one to four carbon atoms and a secondary non-aromatic amine. The reaction is conducted in the liquid phase with a stoichiometric amount of the phenolic compound and stoichiometric or excess of stoichiometric amounts of the aldehyde and the amine. The reaction is performed at a temperature of from about 0.degree. C. to about 100.degree. C. to produce an aminoalkylated halogenated phenolic compound. This aminoalkylated halogenated phenolic compound is contacted with hydrogen in the presence of a metal catalyst at a temperature of about 100.degree. C. to about 175.degree. C. and at a hydrogen pressure of less than 500 psig to produce the desired phenol having at least one alkyl group ortho or para and at least one open position ortho or para.
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Koppers Company Inc.
Lone Werren B.
Long Daniel J.
Zeh, Jr. Herbert J.
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