Process for the production of N-(2-methyl-4-chlorophenyl)-formamidine derivatives
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United States of America Patent
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Sep 16, 1986
Issued Date -
N/A
app pub date -
Aug 11, 1978
filing date -
Mar 1, 1976
priority date (Note) -
Expired
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Abstract
A process for the production of N-(2-methyl-4-chlorophenyl)-formamidine derivatives of formula ##STR1## wherein R.sub.1 is hydrogen or an alkyl radical having 1 to 4 carbon atoms and R.sub.2 is an alkyl radical having 1 to 4 carbon atoms is disclosed which comprises reacting an N-substituted formamide with an inorganic acid chloride, such as phosphorus oxychloride, thionylchloride and phosgene, condensing the intermediate formed with o-toluidine and subsequently chlorinating the N-(2-methylphenyl)-formamidine derivative formed, all reaction steps involved in said process being carried out in the same solvent which is selected from the group of halogenated hydrocarbons.
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