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Yamanouchi Pharmaceutical Co Ltd
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Yamanouchi Pharmaceutical Co Ltd
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Priority to ES478144ApriorityCriticalpatent/ES478144A1/es
Publication of ES478144A1publicationCriticalpatent/ES478144A1/es
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Un procedimiento para la producción de compuestos heterocíclicos nitrogenados, representados por la fórmula: **(formula)** donde Y representa un átomo de oxígeno o un átomo de azufre n representa 0 ó 1; R 1 y R4; que pueden ser iguales o diferentes, representan cada uno de ellos un átomo de hidrógeno, o un grupo alquilo inferior, un grupo alquenilo inferior; R2 representa un átomo de hidrógeno, un grupo alquilo inferior o un grupo alquenilo inferior; R3 representa un átomo de hidrógeno, un grupo hidroxilo, un grupo nitro, un grupo amino, un grupo alcoxi inferior, un grupo mono o di alquil (inferior) amino, o un grupo alquilo inferior.
ES478144A1979-02-271979-02-27Un procedimiento de produccion de compuestos heterociclicos nitrogenados.
ExpiredES478144A1
(es)