• Title/Summary/Keyword: Debromination

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Rapid and Efficient Debromination of vic-Dibromides with VCl3/Indium System

  • Yoo, Byung Woo;Park, Jee Yeon;Shin, Hyo Jong
    • Journal of the Korean Chemical Society
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    • v.62 no.4
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    • pp.275-278
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    • 2018

  • The $VCl_3$/In system was found to be a new protocol for debromination of a variety of vic-dibromides to the corresponding alkenes in high yields with short reaction times under mild conditions. This new methodology is highly chemoselective, tolerating several functional groups such as chloro, bromo, fluoro, keto, ester, carboxyl, and methoxy groups.

  • https://doi.org/10.5012/jkcs.2018.62.4.275 인용 PDF KSCI

Formation of Polybrominated Dibenzo-p-dioxins/Furans (PBDDs/Fs) by the Pyrolysis of 2,4-Dibromophenol, 2,6-Dibromophenol, and 2,4,6-Tribromophenol

  • Na, Yun-Cheol;Hong, Jong-Ki;Kim, Kang-Jin
    • Bulletin of the Korean Chemical Society
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    • v.28 no.4
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    • pp.547-552
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    • 2007

  • This study examined the thermal reactions of 2,4-dibromophenol (diBP), 2,6-diBP and 2,4,6-triBP. The products obtained under pyrolytic conditions were analyzed by gas chromatography/mass spectrometry (GC/MS). 2,7-dibromodibenzo-p-dioxin (diBDD) was the major compound produced from the thermal reaction of 2,4-diBP. In addition, monoBDD and triBDDs were obtained through a process of debromination and bromination, respectively. The pyrolysis of 2,6-diBP and 2,4,6-triBP produced two major brominated dioxin isomers through direct condensation and a Smiles rearrangement. The two ortho-Brs in 2,6-diBP and 2,4,6-triBP mainly led to the production of dioxins, whereas in addition to 2,7-diBDD, 2,4-diBP produced two furans as minor products, 2,8-dibromodibenzofuran (diBDF) and 2,4,8-triBDF, through the intermediate dihydroxybiphenyl (DOHB). The maximum yield of the major dioxins was obtained at 400 oC, and decomposition by debromination at 500 oC resulted in less substituted bromodioxins.

  • https://doi.org/10.5012/bkcs.2007.28.4.547 인용 PDF KSCI

Debromination of 3-(1,2-Dibromo-2-methylpropyl)-1,2-isoxazolines to 3-(2-Methyl-1-propenyl)-1,2-isoxazolines by Sodium Thiolates (3-(1,2-디브로모-2-메틸프로필)-1,2-이속사졸린들의 나트륨 티올레이트들에 의한 탈브롬화 반응을 통한 3-(2-메틸-1-프로페닐)-1,2-티올레이트들에 의한 탈브롬화 반응을 통한 3-(2-메틸-1-프로페닐)-1,2-이속사졸린들로의 변환반응)

  • Kim, Hyeong Cheol;Jo, Su Yeon;Jeon, Dong Ju;Kim, Hyeong Rae
    • Journal of the Korean Chemical Society
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    • v.45 no.6
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    • pp.608-611
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    • 2001

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