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:
Aug. 16, 1983
Filed:
Dec. 18, 1979
Kornelia Domjan nee Pinter, Fuzfogyartelep, HU;
Gyorgy Huszak, Balatonfuzfo, HU;
Zoltan Kolonics, Balatonalmadi, HU;
Laszlo Lendvai, Fuzfogyartelep, HU;
Jeno Pelyva, Fuzfogyartelep, HU;
Endre Sumegi, Fuzfogyartelep, HU;
Elemer Tomordi, Fertoszentmikles, HU;
Bela Gyorfi, Martonvasar, HU;
Laszlo J Szabo, Martonvasar, HU;
Andras Haas, Gyulafiratot, HU;
Miklos Kovacs, Veszprem, HU;
Taszlo Kulcsar, Veszprem, HU;
Miklos Nadasy, Veszprem, HU;
Balint Nagy, Veszprem, HU;
Andras Vass, Veszprem, HU;
Ervin Vertesi, Veszprem, HU;
Nitrokemia Ipartelepek, Fuzfogyartelep, HU;
Nehezvegyipari Kutato Intezet, Veszprem, HU;
Mta Mezogazdasagi Kutato Intezet, Martonvasar, HU;
Abstract
The invention relates to an improved method for the preparation of a 2',6'-dialkyl-N-alkoxymethyl-2-chloro-acetanilide compound of the general formula (I), ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are identical or different and stand for straight-chained or branched C.sub.1-4 alkyl groups. According to the invention a dialkyl aniline of the general formula (II), ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, is treated with aqueous formaldehyde solution in an apolar solvent at a temperature of 30.degree. to 80.degree. C., the solution of the resulting oxymethyl derivative formed with said apolar solvent is separated from the aqueous formaldehyde solution at an elevated temperature and then dehydrated, the resulting azomethine derivative is reacted with chloroacetyl chloride in the same apolar solvent medium, the resulting chloromethyl compound is reacted with an alcohol of the general formula (V),