| 摘要 |
<p>Method comprises reducing cpd. (II) with hydrogen in presence of catalyst such as Raney nickel or palladium suspended on carbon under 2-30 atmos. pressure and at 20-50 deg.C using as solvent ethanol, methanol, ethyl acetate, tetrahydrofuran, water or mixt. of these, filtering off the catalysts, isolating the prod. by usual methods and forming salt by adding organic acid in ethanol or acetanitrile. Prod.</p> |
