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. 11, 2015
Filed:
Dec. 17, 2012
Applicant:
Council of Scientific and Industrial Research, New Delhi, IN;
Inventors:
Vilasrao Chouthaiwale Pandurang, Pune, IN;
Ambadas Devalankar Dattatray, Pune, IN;
Arumugam Sudalai, Pune, IN;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 311/04 (2006.01); C07D 311/58 (2006.01); C07D 493/04 (2006.01);
U.S. Cl.
CPC ...
C07D 311/04 (2013.01); C07D 311/58 (2013.01); C07D 493/04 (2013.01);
Abstract
Disclosed herein is single step process for the synthesis of 4-aryl substituted chromanes of compound of formula 2 comprising subjecting 3-aryloxy-1-phenylpropan-1-ol of formula 1 to (III) chloride-catalyzed intramolecular Friedel-Crafts reaction to obtain 4-aryl substituted chromanes. The invention further discloses novel 4-substituted Chromane compounds.