ES278108A1 - Procedure for the preparation of new N-heterocyclic compounds (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Process for the preparation of new N-heterocyclic compounds of the general formula I ** (See formula) ** in which X1 and X2 mean both hydrogen atoms or together, an additional bond, Z means an alkylene radical, straight or branched chain, with 2 to 6 carbon atoms, R1 means an alkyl or lower alkenyl radical, a phenylalkyl radical or the phenyl radical, R2 means hydrogen or an alkyl or lower alkenyl radical, R3 means hydrogen or an alkyl or lower alkenyl radical, and R4 and R5 signify, independently of one another, hydrogen, lower alkyl radicals or lower alkenyl radicals, the alkyl radicals R3 and R4 may also be linked to each other, directly or via an oxygen atom or an alkylimino group, or an alkyl radical R4 be directly linked to an alkyl radical R5, as well as their salts with inorganic acids and organic compounds and their quaternary ammonium compounds, characterized in that a reactive functional derivative of an R-carboxylic acid of the general formula II is reacted ** (See formula) ** wherein R1, R2, X1 and X2 have the meaning expressed above, and in particular their low molecular weight chloride, bromide or ester, with an alkylenediamine of the general formula III ** (See formula) ** wherein R3, R4, R5 and Z have the meaning expressed above, and, if desired, the obtained reaction product is converted, by treatment with an inorganic or organic acid, to a salt or, provided that R4 is other than hydrogen, by reaction with a reactive ester of an aliphatic or araliphatic alcohol, in a quaternary ammonium compound. (Machine-translation by Google Translate, not legally binding)