| 摘要 |
<p>1382206 Diphenylamines SNAM PROGETTI SpA 12 June 1973 [24 June 1972] 27973/73 Heading C2C Diphenylamine and derivatives thereof are produced by contacting an imine of the formula where R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>, R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP>, R<SP>8</SP>, R<SP>9</SP> and R<SP>10</SP> are H, alkyl, phenyl, amino, alkoxy or hydroxy, with a dehydrogenation catalyst at 300-500‹ C.</p> |
