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:
Oct. 21, 2014
Filed:
Apr. 11, 2007
Applicant:
Shinichiro Nakamura, Shunan, JP;
Inventor:
Shinichiro Nakamura, Shunan, JP;
Assignee:
Tosoh Finechem Corporation, Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 5/02 (2006.01);
U.S. Cl.
CPC ...
C07F 5/025 (2013.01);
Abstract
A method for producing high-purity 2-cyanophenylboronic acid, characterized by reacting benzonitrile, lithium 2,2,6,6-tetramethylpiperidide, and trialkoxyborane, adding an aqueous acidic solution to a reaction solution containing the obtained 2-cyanophenylboronic acid, carrying out a contact treatment at a pH of below 7 in the presence of a water-immiscible organic solvent, and then obtaining the 2-cyanophenylboronic acid from the organic layer.