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:
Jan. 31, 2017
Filed:
Jul. 11, 2014
Applicant:
Actelion Pharmaceuticals Ltd, Allschwil, CH;
Inventors:
Assignee:
ACTELION PHARMACEUTICALS LTD., Allschwil, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 239/47 (2006.01); C07D 239/34 (2006.01); C07D 239/30 (2006.01);
U.S. Cl.
CPC ...
C07D 239/47 (2013.01); C07D 239/30 (2013.01);
Abstract
The invention relates to a process for preparing a pyrimidine intermediate, namely the compound of formula I-2 or a salt thereof, which involves the use of a liquid-liquid extraction using methyl iso-butyl ketone. Said compound of formula I-2 or its salt can be used to prepare macitentan.