Preparation method of estra-4, 9-diene-3,17-diketone
The invention discloses a preparation method of estra-4,9-diene-3,17-diketone. The preparation method uses a compound I as a raw material and prepares the estra-4,9-diene-3,17-diketone by grignard reaction, oxidizing and ring-closing reaction and hydrolyzing and ring-closing reaction according to a...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention discloses a preparation method of estra-4,9-diene-3,17-diketone. The preparation method uses a compound I as a raw material and prepares the estra-4,9-diene-3,17-diketone by grignard reaction, oxidizing and ring-closing reaction and hydrolyzing and ring-closing reaction according to a reaction route shown in the figure. The preparation method has relatively cheap starting materials, high product yield and reduced cost of production. |
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