Process for the preparation of amines
AssigneeSnia Viscosa Societa' Nazionale Industria Applicazioni Viscosa S.p.A.
InventorsFranco Bertini, Carlo A. Pauri
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Abstract
There is described a process for the preparation of amines of the type RNH.sub.2, wherein R represents a hydrocarbon radical containing up to 18 carbon atoms, in particular an aliphatic, arylaliphatic, cycloaliphatic or aromatic radical, the said process being characterized by the fact that an amide having the formula RCONH.sub.2, wherein R has the aforesaid meaning, is reacted, at a pH less than or equal to 7, firstly with gaseous chlorine, in the absence or in the presence of a diluent, and the N-chloroamide thus formed is subsequently reacted with an alkali hydroxide and/or an earth alkali hydroxide.
Claims12
A process for the preparation of an amine of the formula RNH.sub.2, wherein R represents a hydrocarbon radical containing up to 18 carbons selected from the group consisting of an aliphatic radical, an arylaliphatic radical, a cycloaliphatic radical and an aromatic radical, said process comprising reacting an amide having the formula RCONH.sub.2, wherein R has the aforesaid meaning at a pH less than or equal to 7 with gaseous chlorine, in a medium free of alkaline or alkaline earth metal hydroxide to form the corresponding N-chloroamide, isolating the thus formed N-chloroamide and subsequently reacting said N-chloroamide with an alkali hydroxide, an earth alkali hydroxide or a mixture thereof, the molar ratio of the (OH).sup.- groups of said hydroxides to the (CONH).sup.- group of said amide being maintained at a value smaller than or equal to 3:1.
Dependencies are inferred from the claim text.