Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Efficient Synthesis of 1,3-Thiazole Derivatives from Arylidenethiosemicarbazones in the Presence of β-Cyclodextrin with Water

수용액과 β-Cyclodextrin 하에서 Arylidenethiosemicarbazone들로부터 1,3-Thiazole 유도체들의 효율적 합성

  • Park, Kyung-Jin (Department of Chemistry, Kunsan National University) ;
  • Bae, Sun Kun (Department of Chemistry, Kunsan National University)
  • Received : 2007.04.23
  • Accepted : 2007.06.20
  • Published : 2007.08.10
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Abstract

2-Arylidenehydrazinyl-4-arylthiazole derivatives (9a-f) were prepared by the in situ formation of ${\beta}$-cyclodextrin complex of 2,4'-dibromoacetophenone (8) in water followed by the addition of arylidenethiosemicarbazones (7a-f) in 70~88% yield. The structures of the compounds 9a-f were elucidated by IR and $^1H-NMR$ spectral data. The role of ${\beta}$-cyclodextrin appears to activate the compound 7 and 8 and promote the reaction to complete in reduced reaction time.

수용액 상에서 ${\beta}$-cyclodextrin에 2,4'-dibromoacetophenone (8)을 반응시켜 착물을 형성한 후 arylidenethiosemicarbazone 7a-f를 가하여 2-arylidenehydrazinyl-4-arylthiazole 유도체들 9a-f를 70~88% 수율로 합성하였다. 합성한 새로운 화합물들 9a-f의 구조를 IR과 $^1H-NMR$ 스펙트럼 자료로 확인하였다. 이와 같은 실험결과 ${\beta}$-cyclodextrin의 역할은 반응물 7 및 8의 활성화로 반응을 촉진시켜 반응시간이 단축되는 것으로 나타났다.

Keywords

References

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