ES295330A1 - Procedure for preparing a 3-ceto-1,5-bis-dihydro-steroid of (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for preparing a 3-ceto-1,5-bis-dihydro-steroid of (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Scherico Ltd
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Scherico Ltd
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Priority claimed from US251744Aexternal-prioritypatent/US3127428A/en
Priority claimed from US251747Aexternal-prioritypatent/US3127430A/en
Application filed by Scherico LtdfiledCriticalScherico Ltd
Publication of ES295330A1publicationCriticalpatent/ES295330A1/en
Process for preparing a 3-keto-1,5-bis-dehydro-steroid, characterized in that it comprises reacting a 3-keto-1,4-bis-dehydro-steroid with an isomerization agent selected from the group of compounds strongly alkaline metal acetylides, substituted alkali metal acetylides, alkali metal and alkaline earth metal hydrides, alkali metal amides, substituted alkali metal alkyl derivatives and alkali metal alkoxides, in a solvent that does not yields a proton, with the proviso that, when the isomerization agent is an alkali metal alkoxide, the solvent is a dialkyl sulfoxide or an N, N-dialkyl-alkanoic acid amide; and by esterifying, if desired, any free hydroxy group contained in the product thus obtained. (Machine-translation by Google Translate, not legally binding)
ES0295330A1963-01-161964-01-15Procedure for preparing a 3-ceto-1,5-bis-dihydro-steroid of (Machine-translation by Google Translate, not legally binding)
ExpiredES295330A1
(en)
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