Cobalt catalyzed steroid synthesis
    1.
    发明授权
    Cobalt catalyzed steroid synthesis 失效
    钴催化类固醇合成

    公开(公告)号:US4183864A

    公开(公告)日:1980-01-15

    申请号:US879492

    申请日:1978-02-21

    摘要: Steroid compounds obtained by co-oligomerization of a side chain functionalized 1,5-hexadiyne with bis(trimethylsilyl)acetylene catalyzed by cyclopentadiene cobalt dicarbonyl, CpCO(CO).sub.2, via intermediate benzocyclobutene formation followed by intramolecular cycloaddition to the sterospecific formation of the steroid nucleus. This constitutes a short steroid synthesis, five steps from commercially available acyclic precursor 1,5-hexadiyne and three steps from 2-methyl-cyclopent-2-enone.

    摘要翻译: 通过双链官能化1,5-己二炔与双(三甲基甲硅烷基)乙炔的双链官能化化合物获得的类固醇化合物通过环戊二烯钴二羰基,CpCO(CO)2催化,通过中间体苯并环丁烯形成,然后分子内环加成到类固醇的固相特异性形成 核。 这构成短的类固醇合成,从商业上可得到的无环前体1,5-己二炔5步,从2-甲基 - 环戊-2-烯酮三步。