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:
Nov. 21, 1995
Filed:
May. 31, 1994
Applicant:
Inventors:
Ryuji Ueno, Hyogo, JP;
Tomio Oda, Hyogo, JP;
Assignee:
Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549263 ; 549305 ; 549421 ; 560126 ; 568379 ; 568380 ;
Abstract
Improvement in the technique of synthesizing prostaglandins, particularly those having at least one halogen atom at the 16- or 17-position, which comprises introducing a .omega. chain into the aldehyde thereby to enable considerable yield improvement in the production of .alpha.,.beta.-unsaturated ketones, and which does not involve hydrogen generation and can insure safe operation. A method of producing .alpha.,.beta.-unsaturated ketones by reacting aldehyde with 2-oxoalkyl phosphonate, wherein the reaction was carried out under the presence of a base and a zinc compound.