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:
Jun. 07, 1977
Filed:
Aug. 25, 1975
Applicant:
Inventors:
Marinus J van den Brink, Amsterdam, NL;
Helena Austermuhle-Bertola, Amsterdam, NL;
Petrus A Kramer, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2603452 ; 2603 / ; 2604 / ; 2605 / ; 2605 / ; 2605 / ; 2605 / ; 2605 / ; 2605 / ; 2605 / ;
Abstract
Cyclobutanones and cyclobutenones are prepared by contacting a 2-haloacyl halide with an ethylenically unsaturated compound or an alkyne in an inert aprotic solvent at a temperature above 5.degree. C in the presence of zinc and/or tin.