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Hellier, Desmond George (1965) The study of cyclic esters by nuclear magnetic resonance spectroscopy. Doctoral thesis, Sir John Cass College.
In the discussion of nuclear magnetic resonance spectroscopy examples are given of the study of conformations of cyclic compounds by N.M.R.
Unsubstituted, mono-substituted and disubstituted trimethylene sulphites and sulphates have been examined by N.M.R. to obtain information on their conformations and also to attempt to determine the orientation of the S=O in sulphites. The dependence of their spectra on (a) solvent and (b) temperature has also been studied in several cases.
In chapter 4 an attempt is made to deduce the conformation of trimethylene sulphite from calculated anisotropic and electric field effects.
A theoretical analysis of the spectra of the cyclic sulphites and sulphate of 2-tert-butyl propane 1:3 diol is given in the Appendix to support the assignment of conformations.
Conclusions from other workers' results are discussed and compared with those from N.M.R. The final chapter gives a summary of the work in this thesis and suggestions for future work.
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