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Novartis AG
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JR Geigy AG
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Priority to ES0242631ApriorityCriticalpatent/ES242631A1/en
Publication of ES242631A1publicationCriticalpatent/ES242631A1/en
Low-Molecular Organic Synthesis Reactions Using Catalysts
(AREA)
Abstract
Process for the preparation of new azepine derivatives, characterized in that N-substituted iminoestilbenes of the general formula are prepared ** (See formula) ** as well as its quaternary ammonium salts of general formula ** (See formula) ** where they mean X1 and X2 hydrogen or halogen atoms, R1, R2 and R3 low molecular weight alkyl or alkenyl groups, or R1 and R2 together with the nitrogen atom have an alkyleneimino radical with 5 to 6 ring links, or the morpholino radical, And a monovalent anion, or a normal equivalent of a polyvalent anion, and n a low whole number, transposing an N-halogenoalkanoyl-iminoestilbene, optionally substituted on the ring, of the general formula ** (See formula) ** wherein Hal means chlorine or bromine, with an amine of general formula ** (See formula) ** optionally in the presence of a medium which fixes hydrogen halide, and by treating, if desired, the tertiary amine obtained in general formula I with an ester capable of reacting of an alcohol of the general formula R3 - OH IX in particular with a halogenide, sulfate or arylsulfonic ester, and, if desired, subsequently replacing the anion resulting from the acid radical of the ester capable of reacting with another anion. (Machine-translation by Google Translate, not legally binding)
ES0242631A1958-06-241958-06-24Procedure for the preparation of new azepine derivatives (Machine-translation by Google Translate, not legally binding)
ExpiredES242631A1
(en)
Procedure for the preparation of new compounds of 1,4-benzodioxane and 1,5-benzodioxepane (Machine-translation by Google Translate, not legally binding)