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:
Apr. 22, 2003
Filed:
Oct. 27, 2000
Applicant:
Inventor:
Karel M. J. Brands, Jersey City, NJ (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 1/32 ;
U.S. Cl.
CPC ...
C07C 1/32 ;
Abstract
The present invention relates to a process for the preparation of cyclopropaneacetylene by reacting a ketophosphonate with a diazo-transfer reagent in the presence of non-nucleophilic base in an aprotic solvent to generate a reaction mixture containing a ketodiazophosphonate compound and then reacting the reaction mixture with cyclopropanecarboxaldehyde in a non-nucleophilic base and a protic solvent to yield cyclopropaneacetylene.
Brands, Karel M. J.. (2003). Synthesis of cyclopropaneacetylene by a one-pot process (U.S. Patent No. 6552239). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6552239
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile