Preparation of o-(1-methoxy-2-chloro)-ethoxyphenyl N-methylcarbamate
AssigneeBASF SE
InventorsGernot Reissenweber, Siegfried Kersten, Detlef Doehnert
Life of this patent
Estimating the term…
Abstract
O-(1-Methoxy-2-chloro)ethoxyphenyl N-methylcarbamate is prepared by reacting pyrocatechol carbonate with methylamine and then reacting the resulting pyrocatechol monomethylcarbamate with 1,2-dichloroethyl methyl ether in the presence of a secondary amine.
Claims4
A process for the preparation of o-(1-methoxy-2-chloro)-ethoxyphenyl N-methylcarbamate by reacting pyrocatechol carbonate with methylamine and then reacting the resulting pyrocatechol monomethylcarbamate with 1,2-dichloroethyl methyl ether in the presence of an amine, wherein both the reaction of pyrocatechol carbonate with methylamine and the subsequent conversion of the pyrocatechol monomethylcarbamate are carried out in the presence of a secondary amine HNR.sub.2 selected from the group consisting of diisopropylamine and dicyclohexylamine.
Dependencies are inferred from the claim text.