Patent ID: 7390929
Filing Date: 2008-06-24
Classification: C07C

Abstract:
1. A method for the continuous synthesis of a monoalkylhydrazine of formula in which R is selected from the group consisting of C (a) synthesizing the monoalkylhydrazine of formula I in a suitable reactor while causing to react in an alkaline medium and at a temperature in the range between 25 and 45° C. a monochloramine with an anhydrous amine of formula R having the same significance as for formula I; then (b) demixing the solution obtained following step (a) in an organic phase and an aqueous phase by the addition of anhydrous sodium hydroxide under cooling so that the temperature of the demixing medium does not exceed the boiling points of the compounds; and (c) isolating from the organic phase thus obtained the monoalkylhydrazine of formula I.