The gear effect. VII—Conformational analysis of methyl N,N‐diisopropylcarbamate, its thiol and diseleno analogues. An experimental proof for a two‐step conformational interconversion mechanism

@inproceedings{Liljefors1977TheGE,
  title={The gear effect. VII—Conformational analysis of methyl N,N‐diisopropylcarbamate, its thiol and diseleno analogues. An experimental proof for a two‐step conformational interconversion mechanism},
  author={Tommy Liljefors and Jan Sandstroem},
  year={1977}
}
The conformations of the isopropyl groups and the barriers to conformational interconversion in methyl N,N-diisopropylcarbamate, its thiol and seleno analogues have been studied by 1H d.n.m.r. In the diselenocarbamate, complete bandshape analysis of the Se-methyl proton signals proves unequivocally that the conformational interconversion takes place by rotation of one isopropyl group at a time rather than by a concerted rotation of both groups. The populations and barriers observed for the new… CONTINUE READING

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