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:
Nov. 26, 1985
Filed:
Sep. 22, 1983
Applicant:
Inventor:
Alfons Landscheidt, Krefeld, DE;
Assignee:
Chemische Fabrik Stockhausen GmbH, Krefeld, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549463 ;
Abstract
The invention relates to a process for the production of 7-oxabicyclo-(2,2,1)hept-5-ene derivatives by conversion of acrylic acid esters and furanes in the presence of catalytic quantities of a Lewis acid. By use of Lewis acid, the reaction time is greatly reduced with good results in terms of product purity by comparison with known processes. The reaction products are intermediates, e.g. in the production of N-substituted acrylic acid amides.