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:
May. 12, 1981
Filed:
Jun. 09, 1980
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
A process is described for the preparation of N-(1'-alkoxycarbonylethyl)-2,6-dialkylanilines of the formula ##STR1## in which R.sub.1 and R.sub.2 are each methyl or ethyl and R.sub.3 is an alkyl group having 1 to 4 carbon atoms, this process being based on the reaction of a corresponding 2,6-dialkylaniline with a corresponding alkyl 2-chloropropionate or alkyl 2-bromopropionate. The process is carried out by carrying out the reaction of the 2,6-dialkylaniline with the 2-halogenopropionic acid ester at 110.degree.-130.degree. C. in the presence of an alkali metal iodide as the catalyst, and of an alkali metal carbonate or alkali metal bicarbonate as an acid acceptor, in excess 2,6-dialkylaniline as the solvent, removing, by distillation, the water formed during the reaction and working up the organic phase, which is obtained after adding water and separating the phases, by distillation. The N-(1'-alkoxycarbonylethyl)-2,6-dialkylanilines of the above formula which can be prepared by this process are valuable intermediates for the preparation of compounds having a pesticidal action.