发明名称 |
HYDRIERUNG VON CYCLISCHEN UNGESAETTIGTEN VERBINDUNGEN |
摘要 |
<p>Cyclic unsatd. cpds. having OH on an asymmetric centre of the ring and with an olefinic C=C bond are catalytically hydrogenated so that this bond creates an additional asymmetric centre in the ring. Increased stereoselectivity is achieved by increasing addn. of the H to the side of the olefinic bond on the same side of the molecule as the OH. The catalyst is a Ni catalyst with an effective fraction of its surface inactivated with an inorganic salt of a metal of Gps. (I)-(VIII), Periods 4-7 of the Periodic Table, of the Rare Earths or of Al; organic halides; hydrogen halides; or halides of B or As. In an example, d-isomenthol was largely obtd. when d-trans-piperitol was hydrogenated with Raney Ni pre-treated with NiCl2.</p> |
申请公布号 |
DE2725777(A1) |
申请公布日期 |
1978.12.14 |
申请号 |
DE19772725777 |
申请日期 |
1977.06.03 |
申请人 |
SCM CORP. |
发明人 |
JAMES KANE,BERNARD;ELIZABETH IRVING,KAREN;ODELL BLEDSOE JUN.,JAMES;ALBAREZ CANOVA,LEVY |
分类号 |
C07C29/17;(IPC1-7):C07C35/12;C07C29/20 |
主分类号 |
C07C29/17 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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