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Volumn 45, Issue 13, 2004, Pages 2747-2749

Substituent effects on the barrier to carbamate C-N rotation

Author keywords

Amide bond; Conformational isomer; Dynamic NMR spectroscopy; Hammett plot

Indexed keywords

CARBAMIC ACID DERIVATIVE; CHLOROFORM;

EID: 1542358712     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2004.02.037     Document Type: Article
Times cited : (53)

References (22)
  • 15
    • 1542334556 scopus 로고    scopus 로고
    • note
    • Variable temperature NMR spectra were acquired using a 500 MHz instrument. Probe temperatures (±0.5 K) were measured with a calibrated, digital thermocouple. Coalescence temperatures were determined for the t-butyl signals.
  • 18
    • 1542364265 scopus 로고    scopus 로고
    • note
    • ‡ is temperature independent over this relatively small temperature range, so that the values in Table 1 can be compared directly.
  • 20
    • 0028945724 scopus 로고
    • For conformational studies of N-methyl-N-phenyl amide derivatives, which are known to rotate the amide C-N=O plane out of conjugation with the phenyl ring, see:
    • For conformational studies of N-methyl-N-phenyl amide derivatives, which are known to rotate the amide C-N=O plane out of conjugation with the phenyl ring, see: Azumaya I., Kagechika H., Yamaguchi K., Shudo K. Tetrahedron. 51:1995;5277-5290.
    • (1995) Tetrahedron , vol.51 , pp. 5277-5290
    • Azumaya, I.1    Kagechika, H.2    Yamaguchi, K.3    Shudo, K.4


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.