The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2006
Filed:
Dec. 25, 2001
Katsumasa Harada, Yamaguchi, JP;
Shigeyoshi Nishino, Yamaguchi, JP;
Kenji Hirotsu, Yamaguchi, JP;
Akira Nakamura, Yamaguchi, JP;
Takashi Harada, Yamaguchi, JP;
Katsumasa Harada, Yamaguchi, JP;
Shigeyoshi Nishino, Yamaguchi, JP;
Kenji Hirotsu, Yamaguchi, JP;
Akira Nakamura, Yamaguchi, JP;
Takashi Harada, Yamaguchi, JP;
Ube Industries, Ltd., , JP;
Abstract
A process comprising reacting an aliphatic carboxylic ester compound with acetonitrile in the presence of a metal alkoxide to yield a metal salt of a β-ketonitrile compound, subsequently transferring the salt to an aqueous medium, and neutralizing the solution to obtain the β-ketonitrile compound in a free state, wherein a water-immisible organic solvent and water are added to the reaction mixture containing the β-ketonitrile compound metal salt yielded to transfer the metal salt to the water, the resultant aqueous solution of the β-ketonitrile compound metal salt is separated from the organic solvent by phase separation or another technique and then neutralized, and the resultant free β-ketonitrile compound is taken out by extraction with an organic solvent.