Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2007-03-06
2007-03-06
Witherspoon, Sikarl A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S497000
Reexamination Certificate
active
10522367
ABSTRACT:
The present invention provides a safe, convenient and efficient method for producing carboxylic acid by a reaction of alicyclic alcohol with an aqueous hydrogen peroxide to thereby obtain carboxylic acid in high yield from alicyclic alcohol or alicyclic ketone under mild reaction conditions, wherein the reaction operation is simple and easy, a step for removing solvent after completion of the reaction is not necessary and influence and toxicity upon the environment and human body are markedly small. In order to provide it, an oily alicyclic alcohol is allowed to react with an aqueous hydrogen peroxide in the presence of a catalyst containing a metal compound belonging to Group 6 of the Periodic Table in a heterogeneous solution system.
REFERENCES:
patent: 43-19286 (1968-08-01), None
patent: 54-135720 (1979-10-01), None
Zhang Shi-gang, et al, “Geen Catalytic Oxidation of Cyclohexanone to Adipic Acid.”, 2002, Science & Technology in Chemical Industry, vol. 10, No. 5, pp. 4 to 6, 16.
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Yoko Usui et al., “A green method of adipic acid synthesis: organic solvent- and halide-free oxidation of cycloalkanones with 30% hydrogen peroxide,”Green Chemistry, vol. 5, pp. 373-375, 2003.
Shi-gang Zhang et al., “Green catalytic oxidation of cyclohexanone to adipic acid,”Petroleum Science and Technology, vol. 21, Nos. 1 & 2, pp. 275-282, 2003.
Sato Kazuhiko
Usui Youko
Morgan & Lewis & Bockius, LLP
National Institute of Advanced Industrial Science and Technology
Witherspoon Sikarl A.
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