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ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 10, Number 2
JKCSEZ 10(2)
April 20, 1966 |
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Title |
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 합성과 살충능에 관하여 |
Author |
Dae Soo Lee
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Abstract |
Chloral hydrate와 치환 benzene류의 축합에 의한 살충제로는 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 등 주로 bis compounds가 실용화되고 있다. 그러나 치환 phenol류에 있어서는 chloral hydrate의 mol비를 높이면 dioxane형의 화합물이 생성되고 상기한 bis compounds처럼 살충능을 가졌으리라고 예측되므로 2,4,5-trichloro phenol과 chloral hydrate를 축합하여 생성물 구조를 검사하였던바 5,6,8-trichloro-2,4-di-trichloro methyl-benzo-1,3-dioxane임을 확인하였으며 반응조건과 [귤용매] 및 [복숭아 흑진딧물]에 대한 살충능을 검사하였다. 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 ℃.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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62 - 66 |
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