| 摘要 |
Insecticidal pyrazolines (I)[R=(un)substd. Ph, etc.; R1=(un) substd. Ph, 1,4-benzodioxan-6-yl, 1,3-benzodioxol-5-yl, etc.; R2=H, alkyl,; R3=(un)substd. PhOC6H4, (un)substd. 1,3-benzodioxol5-yl, benzofuran- 5-yl, etc.; Z=O,S are prepd. Thus, 4-FC6H4NO2 is condensed with 4- ClC6H4OH in K2CO3-contg. DMSO at 70≦̸C to give 4-(4-ClC6H4O)C6H4NO2, which is hydrogenated into 4-(4-ClC6H4O) C6H4NH2 on PtO2. The amine is reacted with ClCO2CCl3 in PhMe and the prod. is treated with 3-(4- chlorophenyl)-4-phenylpyrazoline to give (I) [R=4-ClC6H4, R1=4-Ph, R2=H, R3=4-(4-ClC6H4O)C6H4,Z=O .
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