Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1996-09-17
1998-09-15
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C07C 6900
Patent
active
058081305
ABSTRACT:
Relates to the direct esterification of phenols, particularly alkyl-substituted phenols, with a carboxylic acid or anhydride, in the presence of a strong acid catalyst. Also relates to the use of the acid anhydride to drive the esterification reaction to completion, where an initial reaction mixture has been formed using the carboxylic acid. Further relates to the achievement of economies in esterification by recovering dilute aqueous acid when either the acid or anhydride is used initially, for recycling to achieve economies of acid use.
REFERENCES:
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patent: 2807639 (1957-09-01), Rickert
patent: 4374263 (1983-02-01), Hancock et al.
patent: 5300689 (1994-04-01), Krbechek
patent: 5349088 (1994-09-01), Krbechek
patent: 5488161 (1996-01-01), Krbechek
Synthetic Organic Chemistry, Wagner and Zook, 1953, p. 480.
M.B. Hocking, J. Chem. Ed., vol. 59, p. 527 (1980).
Henkel Corporation
Jaeschke Wayne C.
Killos Paul J.
Robbins Frank E.
Szoke Ernest G.
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