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:
Aug. 22, 2017
Filed:
Apr. 30, 2014
Applicant:
Euticals S.p.a., Milan, IT;
Inventors:
Michael Nonnenmacher, Leimen, DE;
Torsten Busch, Frankfurt am Main, DE;
Assignee:
EUTICALS S.P.A., , IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 5/04 (2006.01); C07F 5/02 (2006.01);
U.S. Cl.
CPC ...
C07F 5/025 (2013.01); C07F 5/04 (2013.01);
Abstract
The present invention relates to a process for the preparation of aminoaryl- and aminoheteroaryl boronic acids and esters thereof of formula (I) in high yield. The claimed process uses diarylketal formula (V) to generate an arylbromide of formula (III) in which the amino-group is protected as bisarylmethylidenimino-group, which is then transformed into a formula (I) compound.