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Bioterapico I Vitorio Selvi &
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Bioterapico I Vitorio Selvi &
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Publication of ES375589A1publicationCriticalpatent/ES375589A1/en
Process for the synthesis of pyrazolones, and more particularly of the compounds of general formula i: ** (see formula) ** Wherein r represents hydrogen or a substituent which may be a halogen, an alkyl or an alkoxy radical, characterized in that 1- (r-methyl-piperidyl-4') - 3-phenyl-5-pyrazolone is reacted with a substituted or unsubstituted benzyl alcohol in the presence of the corresponding aldehyde, at ambient pressure or under pressure and at temperatures ranging between 120 and 210º, to give the compounds of the general formula. (Machine-translation by Google Translate, not legally binding)
ES375589A1969-12-061969-12-23Procedure for the synthesis of pirazolonas. (Machine-translation by Google Translate, not legally binding)
ExpiredES375589A1
(en)
Procedure for the obtaining of compounds of 3-phenyl-7benzotriazolil-cumarinas of whitening effect. (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of 1,2-diaril-3,5-dioxo-pirazolidines, replaced in position 4 (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of 1- (5-nitro-2-furil) -2- (2-amino-6-piridyl) -ethylene and its derivative N-acetile, as well as its product of diazotation and reduction by cooking. (Machine-translation by Google Translate, not legally binding)