ES273817A1 - A procedure for preparing derivatives of 4-oxo-6-sulfamil - 1,2,3,4- tetrahidroquinazolinona (Machine-translation by Google Translate, not legally binding)
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A procedure for preparing derivatives of 4-oxo-6-sulfamil - 1,2,3,4- tetrahidroquinazolinona (Machine-translation by Google Translate, not legally binding)
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Wyeth Holdings LLC
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American Cyanamid Co
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Publication of ES273817A1publicationCriticalpatent/ES273817A1/en
C07D239/86—Quinazolines; Hydrogenated quinazolines with hetero atoms directly attached in position 4
C07D239/88—Oxygen atoms
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Chemical & Material Sciences
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Organic Chemistry
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Pharmaceuticals Containing Other Organic And Inorganic Compounds
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Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
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Abstract
A process for preparing 4-oxo-6-sulfamyl-1,2,3,4-tetrahydroquinazolinone derivatives of the general formula ** (See formula) ** where R and R3 are alkyl or hydrogen radicals containing up to 6 carbon atoms, R1 and R2 are hydrogen or alkyl radicals containing up to 6 carbon atoms or aralkyl groups and X is halogen or an alkyl group or a trihalomethyl group, characterized by (a) treat a quinazolinone of the formula ** (See formula) ** where R, R1, R2 and R3 are as defined above, with chlorosulfonic acid, to introduce the chlorosulfonic acid group in the 6-position and form a compound of the formula ** (See formula) ** (b) and then treating the 6-chlorosulfonoquinazolinone of the formula III with ammonia to form the compound of the formula I. (Machine-translation by Google Translate, not legally binding)
ES273817A1961-01-181962-01-18A procedure for preparing derivatives of 4-oxo-6-sulfamil - 1,2,3,4- tetrahidroquinazolinona (Machine-translation by Google Translate, not legally binding)
ExpiredES273817A1
(en)
A procedure for preparing derivatives of 4-oxo-6-sulfamil - 1,2,3,4- tetrahidroquinazolinona (Machine-translation by Google Translate, not legally binding)
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