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NOVEL HYDROGENATION CATALYSTS OF RHODIUM/HYDRAZINE COMPLEXES
NOVEL HYDROGENATION CATALYSTS OF RHODIUM/HYDRAZINE COMPLEXES
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机译:铑/肼配合物的新型加氢催化剂
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摘要
The present invention refers to the compounds (.mu.-hydrazine-N1:N2)-bis¢bis(triphenylphosphine)-chlororhodium (I)! and di(.mu.-hydrazine-N1:N2)-bis¢bis(triphenylphosphine)rhodium (I)! dichloride, which are homogenous hydrogenation catalysts and their application in the hydrogenation of the exocyclic methylene group of acid addition salts of 6-demethyl-6-deoxy-6-methylene-5-hydroxytetracycline (methacycline) to prepare .alpha.-6-deoxy-5-hydroxytetracycline (doxycycline).
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