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Volumn 42, Issue 2, 2005, Pages 209-215

Utilization of hypervalent iodine in organic synthesis: A novel and facile two-step protocol for the synthesis of new derivatives of 1H-imidazo[1,2-b] pyrazole by the cyclocondensation involving α-tosyloxyacetophenones

Author keywords

[No Author keywords available]

Indexed keywords

1H IMIDAZO[1,2 B]PYRAZOLE; 2 PHENYL 7 ETHOXYCARBONYL 6 METHYLTHIO 1H IMIDAZO[1,2 B]PYRAZOLE; 4 CYANO 3 METHYLTHIO 1H PYRAZOLE; 4 ETHOXYCARBONYL 3 METHYLTHIO 1H PYRAZOLE; 5 AMINO 1 (4 METHYLBENZOYLMETHYL) 4 CYANO 3 METHYLTHIO 1H PYRAZOLE; 5 AMINO 1 (4 METHYLBENZOYLMETHYL) 4 ETHOXYCARBONYL 3 METHYLTHIO 1H PYRAZOLE; 5 AMINO 4 CYANO 3 METHYLTHIO 1H PYRAZOLE; 5 AMINO 4 ETHOXYCARBONYL 3 METHYLTHIO 1H PYRAZOLE; ACETOPHENONE DERIVATIVE; ALPHA TOSYLOXYACETOPHENONE; IODINE; PHENACYL BROMIDE; POTASSIUM CARBONATE; PYRAZOLE DERIVATIVE; SODIUM CARBONATE; UNCLASSIFIED DRUG; [HYDROXY(TOSYLOXY)IODO]BENZENE;

EID: 16844375638     PISSN: 0022152X     EISSN: None     Source Type: Journal    
DOI: 10.1002/jhet.5570420205     Document Type: Article
Times cited : (15)

References (22)
  • 10
    • 3242815571 scopus 로고    scopus 로고
    • Japanese Patent 07,278,455 (1994)
    • T. Sato, M. Matsuoka, Japanese Patent 07,278,455 (1994); Chem. Abstr., 124, 90281y (1996).
    • (1996) Chem. Abstr. , vol.124
    • Sato, T.1    Matsuoka, M.2
  • 22
    • 16844379751 scopus 로고    scopus 로고
    • note
    • p-Fluorophenyl group exists in compounds 6 and 7, resulting in complication of the spectra due to the coupling between the fluorine and hydrogen atoms in the proton nuclear magnetic resonance spectra (300 MHz). As a result, the signals corresponding to the protons of benzene ring are not observed as dd-shaped peaks, but rather as mm-shaped peaks. When the spectra were obtained on a Jeol JNM-ECP 600M instrument (600 MHz), the aforementioned couplings were observed clearly and the coupling constants (4c and 5f) were also reported.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.