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. 28, 1989
Filed:
Jun. 12, 1986
Applicant:
Inventors:
Louis Amiet, Lyons, FR;
BErnard Langlois, Lyons, FR;
Assignee:
Rhone-Poulenc Specialites Chimiques, Courbevoie, FR;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
560174 ; 560183 ; 562609 ; 568876 ;
Abstract
A process for the preparation of ethyltrifluoroacetoacetate is provided. In this first step, ethyltrifluoroacetate is condensed with ethyl acetate in the presence of sodium ethoxide in cyclohexane. In a second step, the condensation product is neutralized with a protonic acid, such as formic acid, to release an enol. In the third step, the ethyltrifluoroacetoacetate obtained is separated by distillation. The ethyltrifluoroacetoacetate is used as an intermediate in syntheses in the pharmaceutical or plant protection industry.