$\require{mediawiki-texvc}$
  • 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"
쳇봇 이모티콘
안녕하세요!
ScienceON 챗봇입니다.
궁금한 것은 저에게 물어봐주세요.

논문 상세정보

Abstract

In connection with our interest on the photochemical properties of heteroaryl halides, which are currently the subject of heterocyclic ring formation and haloarene degradation, we have studied the photochemistry of the haloarene linked to N-heteroarene compounds. Imidazo[5,1-a]isoindole was synthesized from N-(ochlorobenzyl)imidazole or N-(o-bromobenzyl) imidazole in acidic aqueous solution or acetonitrile via the intramolgcular photocyclization (Table 1). This type of reaction provides the synthetic methods for 5- and 6-membered polyheteroatomic heterocyclic ring compounds. However, the reaction mechanism for the intramolecular photocyclization of haloarene tethered heteroarenes has not yet been established. Grimshaw et al. suggested a mechanism for homolyric carbonhalogen bond fission assisted by radical complexation to explain their results in the photocyclization of 5-(2-chlorophenyl)-1,3-diphenylpyrazole. They also reported the detection of acyclohexadienyl intermediate involved in the above reaction. Park et al. reported several transient 'intermediates involved in the laser flash photolysis of N-(o-halobenzyl) pyridinium and N-benzyl-2-halopyridinium salts. Thus we performed the laser flash photolysis study on the photocyclization reaction of N-(o-chlorobenzyl) imidazole to identify the intermediate species involved in the reaction. Here, we report on the preliminary results in the photocyclization reaction of N-(o-halobenzyl)imidazole through the detection of reaction intermediates.

참고문헌 (6)

  1. Flash Photolysis Observation of Aryl, 2,3-Dihydrocyclohexadienyl, and Halogen Anion Radicals in Aqueous Solution: Photohomolytic Radical Cyclization of Aryl Halides , Park, Y.-T.;N. W. Song;Y.-H. Kim;C.-G. Hwang;S. K. Kim;D. Kim , J. Am. Chem. Soc. / v.,pp., 1996
  2. Spin Trapping , Janzen, E. G. , Acc. Chem. Res. / v.4,pp.31-40, 1971
  3. Photocylization of 1,3-Diphenyl-5-(2-halogenophenyl) pyrazoles: a Mechanism of Homolytic Carbon-Halogen Bond Fission Assisted by Radical Complexation , Grimshaw, J.;A. Prasanna de Silva , J. Chem. Soc. / v.,pp.193-194, 1979
  4. An Intermediate in the Aryl Halide Photocyclization Process Detected by Flash Photolysis , Grimshaw, J.;J. Trocha-Grimshaw , J. Chem. Soc., Chem. Commun. / v.,pp.744-745, 1984
  5. Transient Absorption Spectra from the Photolysis of N-(2-Bromophenyl)alkyl-pyridinium Bromides: Detection of Phenyl, 2,3-dihydropyridinium, and Bromine Anion Radicals , Park, Y.-T.;Y.-H. Kim;S. K. Kim;N. W. Song , Bull. Kor. Chem. Soc. / v.15,pp.607-608, 1994
  6. Synthesis of 5H-Imidazo[5,1-a]isoindole: Photocyclization of N,N-Bis(o-chlorobenzyl)imidazolium chloride and N-(o-chlorobenzyl)imidazole , Byun, Y.-S.;C.-H. Jung;Y.-T. Park , J. Heterocyclic Chem. / v.32,pp.1835-1837, 1995

이 논문을 인용한 문헌 (0)

  1. 이 논문을 인용한 문헌 없음

원문보기

원문 PDF 다운로드

  • ScienceON :

원문 URL 링크

  • 원문 URL 링크 정보가 존재하지 않습니다.

원문 PDF 파일 및 링크정보가 존재하지 않을 경우 KISTI DDS 시스템에서 제공하는 원문복사서비스를 사용할 수 있습니다. (원문복사서비스 안내 바로 가기)

상세조회 0건 원문조회 0건

DOI 인용 스타일