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Evonik Operations GmbH
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Deutsche Gold und Silber Scheideanstalt
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Priority to ES294293ApriorityCriticalpatent/ES294293A3/en
Publication of ES294293A3publicationCriticalpatent/ES294293A3/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Abstract
A process for the preparation of 4-azaphenothiazines substituted in the pyridinic ring by a halogen atom, of the general formula ** (See formula) ** from a 4-azaphenothiazine of the general formula ** (See formula) ** by substitution of the hydrogen atom bound to the nitrogen, by the radical ** (See formula) ** wherein X means a direct bond between the nitrogen atom at position 10 of the azaphenothiazine and the group Alc or the radical -CO-O; -CO-S- or -CO-NH-, Alc is a straight or branched alcohol group with 1 to 6 carbon atoms, which may also be interrupted by an oxygen or sulfur atom, R1 and R2 represent hydrogen or lower alkyl radicals , same or different, which may be closed together or with the group Alc, to form a ring of 5, 6 or 7 members, which may, if necessary, contain one more heteroatom, preferably oxygen, sulfur or the -NH group, this ring may be substituted by one or more alkyl, acyl, benzyl, oxyalcohyl, alkyloxyalkyl, acyloxyalkyl, benzyloxyalkyl and/or carboxylic acid amide groups, characterized in that a radical is used ** (See formula) ** wherein the groups R 1 and R 2 mean lower alkyl radicals closed with the nitrogen atom to form a 6-membered ring which, optionally, contains one more heteroatom, this ring, preferably in the p-position, being replaced by at least one ester group of carboxylic acid. (Machine-translation by Google Translate, not legally binding)
ES294293A1963-12-091963-12-09A procedure for the obtaining of 4 - azafenotiazinas (Machine-translation by Google Translate, not legally binding)
ExpiredES294293A3
(en)
Procedure for the preparation of new compounds of 1,4-benzodioxane and 1,5-benzodioxepane (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of substitute 2- (2ยบ-hydroxypenyl) -benzo-triazol compounds (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of 1-acil-5-phenyl-1-h 1,5-benzodiazepin-2,4- (3h, 5h) -dionas. (Machine-translation by Google Translate, not legally binding)