Fremgangsmåde til fremstilling af 3-enolethylethersteroider
3-enol ethers of 11 beta -hydroxy- DELTA 4-pregnene-3-ones are prepared by reacting triethylorthoacetate with an 11 beta -hydroxy- DELTA 4-pregnene-3-one in a solvent which is at least 40% by weight or more ethanol and 60% by weight or less of a compatible oxygenated hydrocarbon liquid in the presen...
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Main Author | |
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Format | Patent |
Language | Danish |
Published |
05.01.1981
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Edition | 3 |
Subjects | |
Online Access | Get full text |
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Summary: | 3-enol ethers of 11 beta -hydroxy- DELTA 4-pregnene-3-ones are prepared by reacting triethylorthoacetate with an 11 beta -hydroxy- DELTA 4-pregnene-3-one in a solvent which is at least 40% by weight or more ethanol and 60% by weight or less of a compatible oxygenated hydrocarbon liquid in the presence of an acid catalyst. This reaction forms a basis of a process for forming 6-halo-derivatives, particularly 6-chloro- DELTA 1,4,6-pregnatrien -11 beta ,17 alpha ,21-triol-3,20-dione. |
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Bibliography: | Application Number: DK19760000677 |