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Mathematical Planning for Revealing Optimal Synthetic Conditions of Naphthalene Chloromethylation

Pak, V.V.    (Acad. S.Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences, Republic of Uzbekistan   ); Karimov, R.K.    (Acad. S.Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences, Republic of Uzbekistan   ); Shakhidoyatov, Kh.M.    (Acad. S.Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences, Republic of Uzbekistan   ); Yun, L.M.    (Acad. S.Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences, Republic of Uzbekistan   ); Soh, D.W.   (Myongji UniversityUU0000539  );
  • 초록

    Chloromethylnaphthalene is a valuable compound for obtaining of the plant growing stimulator - -napthylacetic acid. Chloromethylation of naphthalene by paraformaldehyde in the presence of glacial acetic acid, phosphoric and hydrochloric acids at temperature 80 - 85C and duration - 6 hours the -chloromethylnaphthalene yield was 55-57%. Using Box-Wilson method for mathematical planning of experiment carried out optimization of its synthesis for purpose increasing -chloromethylnaphthalene yield. Preliminary, one - factor experiments were carried out for selecting independence main parameters influencing on the synthesis. A full factor experiment of 23 with extended matrix of planning was used for optimization. Aiming to increase the -chloromethylnaphthalene yield, the obtained mathematical model was used for program of sharp raising on the reply surface. The received optimal conditions for the -chloromethylnaphthalene synthesis were selected as following: molar ratio of naphthalene parapfsormaldehyde of 1 : 2 temperature - 105C duration of the reaction - 3 hours. The yield of -chloromethylnaphthalene under these optimal conditions was 75%.


  • 참고문헌 (5)

    1. Griehl, Ber., 1947, 80, 410 
    2. S.L. Akhnazarov, V.V. Kafarov. Optimization of experiment in chemistry and chemical technology. M: Vysshaya shkola (High school). 1978. -P. 158-178. (Russia) 
    3. Mousseron, Nguyen-Phuoc-Du, Compt. Rend., 1944, 219, 281 
    4. N. Donaldson. Chemistry and technology of compounds of naphthalenes., M. -1963. - P. 532. (Russia) 
    5. V.V. Pak, R.K. Karimov, Kh.M Shakhidoytov. Chloromethylation of naphthalene. International conference 'Uzbekistan-Korea: Scientific and cultural cooperation'. May 25-28. Tashkent. -2000. -P. 348-350 

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