Process for the preparation of 4,6-dien-3-one steroids
    1.
    发明授权
    Process for the preparation of 4,6-dien-3-one steroids 失效
    制备4,6-二烯-3-酮类固醇的方法

    公开(公告)号:US4311646A

    公开(公告)日:1982-01-19

    申请号:US190223

    申请日:1980-09-24

    CPC分类号: C07J7/0045

    摘要: A 4,6-dien-3-one steroid is produced by brominating an enolic ether of a 4-en-3-one steroid in a water-containing organic solvent which is substantially free from acetic acid and sodium acetate to give a 6-bromosteroid and then dehydrobrominating the 6-bromosteroid in a medium which contains dimethylformamide or N-methylpyrrolidone and 1 to 9% by volume of water.

    摘要翻译: 通过在基本上不含乙酸和乙酸钠的含水有机溶剂中溴化4-烯-3-酮类固醇的烯醇醚,得到6-二烯-3-酮类固醇,得到6- 然后在含有二甲基甲酰胺或N-甲基吡咯烷酮和1至9%(体积)水的培养基中将6-溴甾类化合物脱溴。