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Volumn , Issue 3, 2009, Pages 500-504

One-pot Van Leusen synthesis of 4,5-disubstituted oxazoles in ionic liquids

Author keywords

Aldehydes; Halides; Ionic liquids; Tosylmethyl isocyanide; Van Leusen oxazole synthesis

Indexed keywords


EID: 62349129252     PISSN: 09365214     EISSN: 14372096     Source Type: Journal    
DOI: 10.1055/s-0028-1087547     Document Type: Article
Times cited : (45)

References (32)
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  • 20
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    • For reviews, see: (a) Welton, T. Chem. Rev. 1999, 99, 2071.
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    • Welton, T.1
  • 30
    • 62349125236 scopus 로고    scopus 로고
    • 4, and concentrated in vacuum. The crude product was purified by chromatography on silica gel (PE-EtOAc, 4:1) to provide pure compound 2a (95%).
    • 4, and concentrated in vacuum. The crude product was purified by chromatography on silica gel (PE-EtOAc, 4:1) to provide pure compound 2a (95%).
  • 31
    • 62349086789 scopus 로고    scopus 로고
    • 4, and concentrated in vacuum. The crude product was purified by chromatography on silica gel (PE-EtOAc, 10:1) to provide pure compound 7a (85%).
    • 4, and concentrated in vacuum. The crude product was purified by chromatography on silica gel (PE-EtOAc, 10:1) to provide pure compound 7a (85%).
  • 32
    • 62349090143 scopus 로고    scopus 로고
    • Spectroscopic Data for Products: Compound 2a: 1H NMR (400 MHz, CDCl3, δ, 0.91-0.95 (t, J, 14.4 Hz, 3 H, 1.33-1.49 (m, 3 H, 1.56-1.65 (m, 1 H, 1.79-1.88 (m, 1 H, 2.15-2.21 (m, 1 H, 2.48 (s, 3 H, 4.43-4.46 (m, 1 H, 7.41-7.44 (d, J, 8.0 Hz, 2 H, 7.85-7.87 (d, J, 8.4 Hz, 2 H, 13C NMR (100 MHz, CDCl 3, δ, 13.7, 21.8, 21.8, 27.4, 28.2, 73.0, 130.1, 130.2, 131.2, 146.6, 164.9. Compound 2b: 1H NMR (400 MHz, CDCl 3, δ, 1.74-1.75 (d, J, 6.8 Hz, 3 H, 2.50 (s, 3 H, 4.60-4.65 (m, 1 H, 7.44-7.46 (d, J, 8.0 Hz, 2 H, 7.87-7.89 (d, J, 8.0 Hz, 2 H, 13C NMR (100 MHz, CDCl3, δ, 15.5, 21.8, 68.3, 130.2, 130.7, 146.7, 164.6. Compound 2c: 1H NMR (400 MHz, CDCl3, δ, 1.16-1.19 (t, J, 15.2 Hz, 3 H, 1.84-1.92 (m, 1 H, 2.23-2.29 (m, 1 H, 2.49 (s, 3 H, 4.38-4.42 m
    • 3)


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.