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. 13, 1982
Filed:
May. 01, 1981
Applicant:
Inventor:
Steven A Roman, Oakdale, CA (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
564454 ; 568303 ; 568351 ;
Abstract
Novel pyrethroid intermediates ##STR1## wherein R.sup.1 and R.sup.2 each is alkyl are prepared by treating 2,2-dimethyl-3-(2-oxopropyl)cyclopropylacetaldehyde with a trialkylsilyldialkylamine. The above compounds can be treated with ozone to form 2,2-dimethyl-3-(2-oxopropyl)cyclopropanecarbaldehyde.