13C NMR spectra of 8‐aryl‐8‐azabicyclo[3.2.1]oct‐3‐en‐2‐ones and related compounds

Wiley - Tập 12 Số 6 - Trang 357-361 - 1979
Alan R. Katritzky1, N. DENNIS1, Gebran J. Sabongi1
1School of Chemical Sciences, University of East Anglia, Norwich NR4 7TJ, UK

Tóm tắt

AbstractCarbon‐13 NMR spectra of various 8‐aryl‐8‐azabicyclo[3.2.1]oct‐3‐en‐2‐ones and other related compounds, including tropinone, were determined, and the predominant conformation at the bridgehead nitrogen was established. The full assignment of resonances from proton decoupled and coupled spectra was based on the analysis of the splitting pattern and characteristic chemical shifts. The use of the determined 13C NMR spectra in the assignment of 13C NMR data in related but more complicated structures is also proposed.

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Tài liệu tham khảo

10.1002/anie.197600011

Dennis N., 1976, J. Chem. Soc. Perkin Trans. 1, 2307

A. R.Katritzky S.Rahimi‐Rastgoo G. J.SabongiandG. W.Fischer in preparation.

Dennis N., 1976, J. Chem. Soc. Perkin Trans. 1, 2289

Dennis N., 1974, J. Chem. Soc. Perkin Trans. 1, 1883

B.Ibrahim PhD. thesis University of East Anglia Norwich UK 1975 p.220.

Dennis N., 1977, J. Chem. Soc. Perkin Trans. 1, 1930

Dennis N., 1976, J. Chem. Soc. Perkin Trans. 1, 2296

10.1002/jhet.5570140211

10.1139/v75-081

Breitmaier E., 13C NMR Spectroscopy, Methods and Applications, 5

Ebel H. F., 1974, Monographs in Modern Chemistry, 154

10.1002/mrc.1270020609

10.1002/mrc.1270060606

10.1021/ja00753a064