Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Reexamination Certificate
2006-03-21
2006-03-21
Lankford, Jr., Leon B. (Department: 1651)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
C435S136000, C435S189000, C435S191000, C435S232000
Reexamination Certificate
active
07015020
ABSTRACT:
The invention discloses a novel method for the preparation of a 2-keto carboxylic acid from carbon dioxide by an enzymatic addition reaction with an aldehyde compound. Carbon dioxide, which can be in the form of carbonate ions, is reacted with an aldehyde compound such as acetaldehyde and propionaldehyde under mild reaction conditions in the presence of a decarboxylase to give a 2-keto carboxylic acid such as pyruvic and a 2-ketobutyric acid by a reverse reaction to the enzymatic decarboxylation reaction. The scope of the invention involves contribution to a solution of the environmental problem of global warming due to carbon dioxide as a greenhouse effect gas in the aerospace.
REFERENCES:
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Foppen, et al., Recl. Trav. Chim. Pays-Bas, vol. 109, No. 5, pp. 359-360 (1991).
Miyazaki, et al., Chemical Communiations, vol. 18, pp. 1800-1801, (Aug. 2001) Cambridge, United Kingdom.
Wiesser, et al., Journal of Molecular Catalysis B Enzymatic, vol. 11, No. 4-6, pp. 179-184, (2001).
Maeda Hideaki
Miyazaki Masaya
Nakamura Hiroyuki
Shibata Masao
Yamada Noriyuki
Lankford , Jr. Leon B.
National Institute of Advanced Industrial Science and Tecnology
Wenderoth , Lind & Ponack, L.L.P.
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