Question

what are the chemical shifts , possible functionality and methly,methylene, methine or 4°

4 lartons Solvent 50.0 X: pats per Million : 130 no alcohol no ester U aco: ll Chloroforn no Corbony's Single boves -petage 0.9 memylive iz methine 117 S - Singlet no integrations no Splitting Patterns

Answer 1

Hi Dear you cropped the spectrum, are you sure that there is no peaks other side, sometimes very small intensity peaks are considered by mistake as impurities, it's always good idea to post full spectrum. Normally Experts should not answer this type of questions where full spectrum is not posted, but you asked me " what are the chemical shifts , possible functionality and methly,methylene, methine or 4°" - possible hence i tried my best to answer this question.

The unknown is most probably pentanamide.

The most probable match and chemical shift assignments have been shown in below image for your kind consideration.

200 180 160 140 120 80 60 40 20 0 100 ppm ppm 176.82 35.72 27.73 22.38 13.79 3 5 Us WNH 4

Hope this helped you!

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