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:
Jul. 28, 1981
Filed:
May. 28, 1980
Applicant:
Inventors:
Johannes L Syrier, Amsterdam, NL;
Johannes Van Berkel, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568303 ; 568669 ; 568591 ; 568420 ; 560231 ; 562506 ; 2603 / ; 26034321 ;
Abstract
New compounds of formula: ##STR1## wherein R.sup.1 is an alkyl group and R.sup.2 a 2-oxopropyl group or a 2,2-dihalovinyl group are prepared by elimination of an alcohol R.sup.1 OH from an acetal of formula: ##STR2## The compounds are intermediates in route to pyrethroid insecticides.