The .ALPHA.-chlorination of aryl ketones with manganese(III) acetate in the presence of chloride ion.
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概要
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The reaction of 2-(4-methoxyphenyl)-4-chromanone with Mn(OAc)<SUB>3</SUB> in the presence of LiCl gave 3,3-dichloro-2-(4-methoxyphenyl)-4-chromanone. The reactions of 2-phenyl-4-chromanone, 1-phenyl-1-propanone, 1,2-diphenylethanone, and 1-tetralone similarly yielded α,α-dichloro derivatives in good yields. 2,2,2-Trichloroacetophenones were obtained from 2,2-dichloroacetophenones, but in the absence of LiCl, 2,2-dichloroacetophenones gave 2,2,3,3-tetrachloro-1,4-butanediones. KCl, NaCl, NH<SUB>4</SUB>Cl, AlCl<SUB>3</SUB>, and CaCl<SUB>2</SUB> were also employed as the Cl<SUP>−</SUP> ion source. Synthetic applicability and the reaction mechanisms are discussed briefly.
- 公益社団法人 日本化学会の論文
著者
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Kurosawa Kazu
Department Of Chemistry Faculty Of Science Kumamoto University
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Tsuruta Takehiko
Department Of Applied Chemistry Tohwa University
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Harada Tetsuya
Department of Microbiology, Shizuoka Institute of Environment and Hygiene
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Nishino Hiroshi
Department Of Applied Chemistry National Defense Academy
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Tsuruta Takehiko
Department of Chemistry, Faculty of Science, Kumamoto University
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Harada Tetsuya
Department of Chemistry, Faculty of Science, Kumamoto University
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