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:
Mar. 09, 1976
Filed:
Nov. 16, 1973
Applicant:
Inventor:
Alfred A Schleppnik, St. Louis, MO (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C11B / ;
U.S. Cl.
CPC ...
252522 ; 2605 / ;
Abstract
4-(2'-norbornyl)-2-butanones characterized by the structural formula ##SPC1## Wherein R.sup.1 represents hydrogen or methyl, and R represents hydrogen or a lower alkyl group are prepared by a crossed aldol condensation of 5-norbornene-2-carboxaldehyde or norbornane-2-carboxaldehyde with methyl ketones in a basic medium followed by a subsequent dehydration of the aldol formed to prepare the 3-buten-2-ones which are subsequently hydrogenated. The compounds have very pleasant, strong and long lasting woody odors and are useful as compounds in fragrance compositions.