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. 16, 1977
Filed:
Nov. 04, 1976
Applicant:
Inventors:
Donald Edwin Robertson, Terre Haute, IN (US);
Wilbert Herbert Urry, Chicago, IL (US);
Frank Kavka, St. Louis, MO (US);
Assignee:
IMC Chemical Group, Inc., Terre Haute, IN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
26034341 ;
Abstract
A method is disclosed for preparing dideoxyzearalane and related compounds which comprises reacting a hexahydrozearalin with an organic sulfonyl chloride to form a sulfonate ester derivative; recovering the sulfonate ester derivative; and catalytically dehydrosulfonyloxylating and aromatizing the sulfonate ester derivative to form the desired product.