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

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

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

초록

Chloral hydrate와 置換 benzene類의 縮合에 依한 殺蟲劑로는 1,1,1-trichloro-2,2-bis(p-chloro phenyl) ethane, 1,1,1-trichloro-2,2-bis(p-methoxy phenyl) ethane, 1,1-di chloro-2,2-bis(p-chloro phenyl) ethane 等 主로 bis compounds가 實用化되고 있다. 그러나 置換 phenol類에 있어서는 chloral hydrate의 mol 比를 높이면 dioxane型의 化合物이 生成되고 上記한 bis compounds처럼 殺蟲能을 가졌으리라고 豫測되므로 2,4,5-trichloro phenol과 chloral hydrate를 縮合하여 生成物의 構造를 檢討하였던바 5,6,8-trichloro-2,4-di-trichloro methyl-benzo-1,3-dioxane임을 確認하였으며 反應條件과 [귤응애] 및 [복숭아 흑진딧물]에 대한 殺蟲能을 檢討하였다.

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.

키워드

참고문헌

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