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Merck and Co Inc
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Merck and Co Inc
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Application filed by Merck and Co IncfiledCriticalMerck and Co Inc
Publication of ES235381A1publicationCriticalpatent/ES235381A1/es
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Procedimiento para preparara compuestos de 4-cloro-5-halobencen-1,3-disulfonamida, que comprende calentar un o-halofenol con ácido clorosulfónico para obtener cloruro de 5-halo-4-hidroxibencen-1,3-disulfonilo, el cual se calienta con pentacloruro de fósforo y se hace reaccionar luego con amoniaco, para producir la correspondiente 4-cloro-5-halobencen-1,3-disulfonamida, donde el 5- halo sustituyente se selecciona del grupo que comprende los átomos de cloro y bromo.
ES0235381A1956-05-021957-04-30Procedimiento para preparar compuestos de 4-cloro-5-holobencen 1,3-disulfonamida
ExpiredES235381A1
(es)