| 摘要 |
<p>600-6781 CANADA IMPROVEMENTS IN OR RELATING TO ORGANIC COMPOUNDS This disclosure describes novel compounds of the formula wherein R1 and R2 each independently represent hydrogen, fluorine, chlorine, alkyl of 1 to 4 carbon atoms, straight chain alkoxy of 1 to 4 carbon atoms, amino, nitro or trifluoromethyl, and X represents or , which are useful as minor tranquilizers and sleep inducers.</p> |
