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. 24, 1980
Filed:
Nov. 30, 1977
Applicant:
Inventors:
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C11B / ;
U.S. Cl.
CPC ...
568596 ; 568486 ; 568426 ; 568420 ; 568447 ; 2603478 ; 568592 ; 568591 ; 549 66 ; 2525 / ;
Abstract
An unsaturated carbonyl compound, for example, one expressed by the following formula, ##STR1## is prepared by maintaining at an elevated temperature a novel allyl acetal of a .beta.,.gamma.-unsaturated aldehyde, for example, one expressed by the following formula ##STR2## The allyl acetal can be derived, for example, for 3-methyl-3-butenal-1 having 5 carbon atoms and prenyl alcohol having 5 carbon atoms. Thus, the unsaturated aldehyde having the increased number of carbon atoms can be formed in a high yield by a relatively simple reaction.