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Priority to BG9247090ApriorityCriticalpatent/BG50653A1/en
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These compounds are used as burning deterrents of polyamide and have the following common formula<IMAGE>,where R1 is hydrogen or methyl group, R2 - hydrogen, acetyl amino group, nitro group or methyl group, R3 - hydrogen, nitro group or methoxy group. By this method, phenylsulfonyl chlorides is replaced with the formula<IMAGE>,where R1, R2 and R3 have the above-mentioned denotes, with potassium 4-nitrophthalymide in organic solvent, at temperatures between 20 and 100 degrees C, in the presence of catalytic quantities of 18-crown-6.
BG9247090A1990-07-181990-07-18N- sulphonyl derivatives of 4- nitrophthalimide and method for their preparation
BG50653A1
(en)
INDOLO(3,2,1-DE>(1,4>-OXAZINO(2,3,4IJ>(1,5>NAPHTHYRIDE DERIVATIVES, PROCESSES FOR THEIR MANUFACTURE AND INTERMEDIATE PRODUCTS, THEIR USE AS MEDICINAL PRODUCTS AND PREPARATIONS CONTAINING THEM.
NEW 4-HYDROXY-2H-1,2-BENZOTHIAZINE-3-CARBOXAMIDE1,1-DIOXIDES, PROCESSES FOR THEIR PREPARATION, THEIR USE AND PHARMACEUTICALS CONTAINING THESE COMPOUNDS.
NEW 11-PIPERAZINYL-5H-IMIDAZO(2,1C>(1,4>BENZODIAZEPINS, PROCESSES FOR THEIR PREPARATION AND INTERMEDIATE PRODUCTS AND PHARMACEUTICALS CONTAINING THE FIRST.