ES380878A1 - Procedure for obtaining alkaline salts from heterociclic diazocompuestos. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for obtaining alkaline salts from heterociclic diazocompuestos. (Machine-translation by Google Translate, not legally binding)
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Istituto Luso Farmaco dItalia SpA
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Istituto Luso Farmaco dItalia SpA
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Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Procedure for obtaining alkaline salts of heterocyclic diazo compounds, of general formula: **(See formula)** in which R represents a hydrogen atom, a methyl group or an ethyl group; R1 represents a hydrogen or halogen atom, preferably chlorine, bromine or fluorine, or a nitro group; R2 represents a phenyl, o-chlorophenyl, m-chlorophenyl or p-chlorophenyl group, and R3 and R4 each represent an atom of an alkali metal, for example sodium or potassium, characterized by reacting a compound of General Formula: **(See formula)** in which R represents a hydrogen atom or a methyl or ethyl group; R1 represents a hydrogen, chlorine, bromine, fluorine atom or a nitro group, and R2 represents a phenyl group, o-chlorophenyl-, m-chlorophenyl or p-chlorophenyl, with a compound of general formula: **(See formula)** in which it represents a lower alkyl group, and introducing a carbon side chain into the carbon atom, in position 3, of the resulting cyclization product, using methyl or ethyl carbonate or chlorocarbonates, in the presence of alkaline agents, and subjecting the formed ester to alkaline hydrolysis by using an alcoholic solution of an alkali metal alkoxide, to obtain the alkaline salt of the product. (Machine-translation by Google Translate, not legally binding)
ES380878A1970-05-121970-05-27Procedure for obtaining alkaline salts from heterociclic diazocompuestos. (Machine-translation by Google Translate, not legally binding)
ExpiredES380878A1
(en)
A procedure for the preparation of new derivatives of acid2,3-alquilen (lower) penam-3-carboxylic. (Machine-translation by Google Translate, not legally binding)