The Effects for insecticide and synthesis of 5,6,8-trichloro-2,4-di-trichloro methyl benzo-1,3-dioxane

5,6,8-Trichloro-2,4-di-trichloromethyl-benzo-1,3-dioxane의 合成과 殺충能에 관하여

  • Lee, Dae-Soo (Dept. of Chemistry Kyung Pook National University)
  • 이대수 (慶北大學校 文理科大學 化學科)
  • Published : 19660600


An insecticide was obtained from condensation of chloral hydrate with 2,4,5-trichloro phenol. The structure of the insecticide was found to be 5,6,8-trichloro 2,4-di-trichloro methyl benzo 1,3-dioxane. The best conditions of the condensation were as follows: 1) The sulfuric acid concentration; $97{\%}$. 2) The mole ratio of sulfuric acid to 2,4,5-trichloro phenol; 14.2. 3)The mole ratio of chloral hydrate to 2,4,5-trichloro phenol; 2.4. 4) The reaction time & reaction temperature;15hrs & $50-55^{\circ}C$.The insecticidal effects of T. D. B against the Citrus Red Mite and Green Peach Aphid were the same of Mydran.



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