• 제목/요약/키워드: regioselective iodination

검색결과 2건 처리시간 0.017초

4-cyano-3,5-difluorophenol의 새로운 합성법 (A facile synthesis of 4-cyano-3,5-difluorophenol)

  • 송정섭
    • 한국산학기술학회논문지
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    • 제7권6호
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    • pp.1308-1312
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    • 2006
  • 액정재료의 중간체로 사용되는 4-cyano-3,5-difluorophenol를 3,5-difluorophenol을 출발물질로 하여 요오드 치환반응 및 시안화학반응으로 이루어지는 2 단계로 합성하였다. 생성된 4-cyano-3,5-difluorophenol은 분광학적 방법으로 분석하여 표준 시료와 비교 확인되었다.

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Novel synthetic method for the preparation of α-iododaphnetin using benzyltrimethylammonium dichloroiodate

  • Kim, Taek-Soo;Kim, Bo-Ram;Park, Jeong Hoon;Yang, Seung Dae
    • 대한방사성의약품학회지
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    • 제2권1호
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    • pp.56-60
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    • 2016
  • Benzyltrimethylammonium dichloroiodate in the presence of $ZnCl_2$ has been used for aromatic iodination of electron rich aromatic compounds. However, Baylis-Hillman type regioselective ${\alpha}$-iodination was carried out electronically rich coumarin compound under mild reaction condition with excellent chemical yield. Finally, $BBr_3$ demethylation gave ${\alpha}$-iododaphnetin.