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. 04, 2021
Filed:
May. 28, 2020
Applicant:
International Flavors & Fragrances Inc., New York, NY (US);
Inventors:
Yigal Becker, Tel Aviv, IL;
Michael Cheskis, Nesher, IL;
Assignee:
INTERNATIONAL FLAVOR & FRAGRANCES INC., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/83 (2006.01); B01J 23/46 (2006.01);
U.S. Cl.
CPC ...
C07D 307/83 (2013.01); B01J 23/462 (2013.01);
Abstract
Synthetic methods of preparing perhydro-3,6-dimethyl-2-benzo[b]furanones, in particular dihydromintlactone, and analogs through reaction of dehydrogenation of menthanediols and analogs with a base in the presence of (carbonylchlorohydrido[bis-(2-diphenylphosphinoethyl)amine]ruthenium(II) as catalyst in good stereoselectivity and yields under stereochemistry controlled conditions are disclosed.