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Antibioticos SA
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Antibioticos SA
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Priority to ES464314ApriorityCriticalpatent/ES464314A3/en
Publication of ES464314A3publicationCriticalpatent/ES464314A3/en
Low-Molecular Organic Synthesis Reactions Using Catalysts
(AREA)
Abstract
"A METHOD FOR PREPARING A DERIVATIVE OF URACIL", with the formula ** (See formula) ** where R is selected from the group consisting of hydrogen methyl, trihalomethyl, and halogen, X is selected from the group consisting of CH and N, and n from the group consisting of 1 and 2, which consists of reacting a derivative of 2,4- bis (trimethylsilyl) uracil of formula ** (See formula) ** where R is selected from the group consisting of hydrogen, methyl, trihalomethyl, and a halogen, X is selected from the group consisting of CH and N, with a substituted cyclic ester having the formula ** (See formula) ** where R1 is selected from the group consisting of acetyl and alkyl and n is 1 or 2, in the presence of a Friedel-Crafts catalyst in an organic solvent medium inactive with respect to the mentioned components, initially. (Machine-translation by Google Translate, not legally binding)
ES464314A1977-11-211977-11-21A method for preparing a derivative of uracil. (Machine-translation by Google Translate, not legally binding)
ExpiredES464314A3
(en)
A procedure for the production of 1-b-d-arabinofuranosil-5- (2-carboxivinil) uracil or its derivatives. (Machine-translation by Google Translate, not legally binding)
New procedure for obtaining acid salts from addition of 3-phenyl-5-dietilamino-etil-1,2-4, -oxodiazol. (Machine-translation by Google Translate, not legally binding)