| 摘要 |
Synthetic pyrethroids (I)[R1=(a),(b),(c); R2=H, CN; R3, R4=H, halo; if R5=R6, R5 and R6=Cl, Br, CH3; if R5≠R6, R5=Cl, Br, CH3 and R6=TFM , useful as an insecticide, were prepd.. Thus, a mixt. contg. 4.4mM cis, trans-3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclo propane carboxylate, 4mM 3-phenoxy benzaldehyde, 5.6mM sodium cyanate, 0.09mM tetra-n-butyl ammonium iodide, 20ml toluene, and 1ml H2O was treated with 4.4mM benzene sulfonyl chloride to give α-cyano-3phenoxybenzyl-cis, trans-3-(2,2-dichlorovinyl)-2m2-dimethyl cyclo propane carboxylate.
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