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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
Priority to ES0312210ApriorityCriticalpatent/ES312210A1/en
Publication of ES312210A1publicationCriticalpatent/ES312210A1/en
Low-Molecular Organic Synthesis Reactions Using Catalysts
(AREA)
Abstract
Process for preparing pyrazinoylguanidines, especially a pyrazinoylguanidine of formula ** (See formula) ** which comprises the reaction of a levialkyl ester of a 3-NRR1-6-X-pyrazinoic acid of formula ** (See formula) ** wherein X is selected from halogen and trihalomethyl; R and R1 are each selected from the group consisting of hydrogen, levyalkyl, phenyl and phenyl-levyalkyl; R2 and R3 are each selected from the group consisting of hydrogen, levyalkyl, phenyl, phenyl-levyalkyl and acyl; R4 is selected from hydrogen and levyalkyl; R and R1, R2 and R3 (r4) and r3-r4, levyalkyl groups, can be linked to form a heterocyclic ring with the nitrogen atom to which they are attached, and at least one of the groups R, R1, R2, R3 , R4 is different from hydrogen. (Machine-translation by Google Translate, not legally binding)
ES0312210A1965-04-141965-04-14Procedure for preparing piracinoilguanidinas. (Machine-translation by Google Translate, not legally binding)
ExpiredES312210A1
(en)