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:
Mar. 01, 2022
Filed:
Nov. 02, 2018
Applicant:
Fermion Oy, Espoo, FI;
Inventors:
Antti Piisola, Espoo, FI;
Jan Tois, Espoo, FI;
Assignee:
FERMION OY, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 209/34 (2006.01); C07D 403/12 (2006.01);
U.S. Cl.
CPC ...
C07D 209/34 (2013.01); C07D 403/12 (2013.01);
Abstract
The present disclosure relates to a preparation method of methyl (E)-1-acetyl-3-(methoxy(phenyl)methylene)-2-oxoindoline-6-carboxylate from methyl 2-oxoindoline-6-carboxylate using high reaction temperatures and a reaction solvent enabling azeotropic removal of acetic acid during the reaction.