| 摘要 |
<p>(I) is an intermediate for the prepn. of anti-inflammatory cpds. described in FR 1,482,808 and is prepd. by reacting (II) with pyrrolidine in alcoholic soln., dissolving the product (III) in acetic acid, and contacting it with an acetic soln. of phenylhydrazine acetate: In an example, 10 g. (II) was treated with 2 ml pyrrolidine to give 9.3 g (III) and 8.65 g. (III) was treated with 2.1 g. phenyl hydrazine in acetic acid to give 8.1 g. (I).</p> |
