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1,4-Thiazine Carboxanilide의 합성: Pummerer 반응에서의 인접기 참여효과

A Synthesis of 1,4-Thiazine Carboxanilide: Neighboring Group Participation in Pummerer Reaction

  • 한호규 (한국과학기술연구원 생체과학연구부) ;
  • 남기달 (한국과학기술연구원 생체과학연구부) ;
  • 마혜덕 (경기대학교 화학과)
  • Han, Ho-Gyu (Organic Chemistry Lab, Korea Institute of Science and Technology) ;
  • Nam, Gi-Dal (Organic Chemistry Lab, Korea Institute of Science and Technology) ;
  • Ma, Hye-Deok (Department of Chemistry, Kyonggi University)
  • 발행 : 2002.08.20

초록

새로운 ${\alpha},{\beta}$-불포화Carboxanilide계열의 살균제를 개발을 목적으로 4-acetyl-3-methyl-N-phenyl-1,4-thiazine-2-Carboxamide(6)의 합성에 대하여 기술하였다. Dihydro-1,4-thiazine methyl ester 11을 산화하여 생성된 sulfoxide 7을 Pummerer 반응하여 $\alpha$-acetoxy dihydro-1,4-thiazine 10a를 얻었다. 반며에 Dihydro-1,4-thiazine Carboxanilide sulfoxide14는 동일한 반응조건 하에서 중간체 sulfonium ion의 carboxanilide기가 관여한 vinylogous Pummerer 반응의 전위에 의하여 중간체를 15를 통하여 acetoxymethyl dihydro-1,4-thiazine 18이 생성되었다. 1,4-Thiazine carboxanilide 6은 $\alpha$-acetoxy dihydro-1,4-thiazine 10a를 산촉매로 처리한 다음 생성된 21a를 가수분해하고 아닐린과 결합하여 합성하였다

For the purpose of development of new agrochemical fungicide of ${\alpha},{\beta}-unsaturated$ carboxanilide series a synthesis of 4-acetyl-3-methyl-N-phenyl-1,4-thiazine-2-carboxamide (6) is described. Pummerer reaction of sulfoxide 7 obtained by sulfoxidation of dihydro-1,4-thiazine methyl ester 11 gave ${\alpha}-acetoxy$ dihydro-1,4-thiazine 10a. Under the same reaction conditions, dihydro-1,4-thiazine carboxanilide sulfoxide 14 was converted to acetoxymethyl dihydro-1,4-thiazine 18 through vinylogous Pummerer reaction involving carboxanilide of sulfonium ion through intermediate 15.1,4-Thiazine carboxanilide 6 was synthesized from the treatment of ${\alpha}-acetoxy$ dihydro-1,4-thiazine 10a with acid cat-alyst followed by hydrolysis and then the reaction with aniline.

키워드

참고문헌

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피인용 문헌

  1. Synthesis and structure–activity studies of antibacterial oxazolidinones containing dihydrothiopyran or dihydrothiazine C-rings vol.16, pp.13, 2006, https://doi.org/10.1016/j.bmcl.2006.03.104
  2. 1,4-티아진 설폭사이드의 위치선택성 Pummerer 반응(I) vol.46, pp.6, 2002, https://doi.org/10.5012/jkcs.2002.46.5.489
  3. 1,4-티아진 설폭사이드의 위치선택적 Pummerer 반응(II) vol.48, pp.4, 2004, https://doi.org/10.5012/jkcs.2004.48.4.443