Patents by Inventor Gyorgy Litkei

Gyorgy Litkei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the preparation of substituted chloroacetanilides
    Patent number: 4511736
    Abstract: The invention relates to a novel process for preparing chloroacetanilides of the formula ##STR1## wherein: R.sub.1 and R.sub.2 represent independently from each other a hydrogen atom or a C.sub.1-8 alkyl or C.sub.1-8 alkoxy group; andR.sub.3 stands for a straight chained or branched C.sub.1-8 alkoxy group.Said process is characterized by chloroacetylating a 2,6-dialkylaniline of the formula ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, at a temperature of 10.degree. to 120.degree. C., optionally in a solvent medium in the presence of an acid binding agent, then reacting a thus-obtained intermediate with chloromethyl chloroformiate or, alternatively, reacting a compound of the formula (II) first with chloromethyl chloroformiate and subjecting then to chloroacetylation, thereafter reacting a thus-obtained intermediate with an alcohol of the formulaR.sub.3 --OH (III),wherein R.sub.
    Type: Grant
    Filed: January 7, 1983
    Date of Patent: April 16, 1985
    Assignee: Eszakmagyarorszagi Vegyimuvek
    Inventors: Ferenc Mogyorodi, Eniko Koppany, Tibor Bodi, Karoly Balogh, Istvan Toth, Rezso Bognar, Sandor Makleit, Gyorgy Litkei, Miklos Rakosi, Zoltan Dinya