Question

Draw the four amide structures for the molecular formula C3H7NO that belong to their correct spectra, label their unique protons, then assign each signal to the proton or group of protons they represent

1) Draw the four amide structures for the molecular formula C3H7NO that belong to their correct spectra, label their unique protons, then assign each signal to the proton or group of protons they represent. 11 10 9 8 7 6 5 4 3 2 1 0 HSP-04-529 ppm

Answer 1

Moleclor formula C3H7 NO We have to predict four amide structors From NMR data @ there are One around 8ppm and other which is a doublet also.. two peaks around 3 ppm So the structure soust be (Az & N C peale around ~3 ppm. -CH₂- n8ppm In case of NMR-6 at around 8ppm and 2 and 3ppm. There is one small peat two large peale around - The structure must be AOH=CH2 NMR-O CH₃- 2ppm. ~8ppm > 3ppm due to low sheilding low sheilding .

In case of ② there is a sharp prak Forood in between 6.5 to i7 ppm. Other two peaks shows one quartet and one triplet. So only possibility is NH2 - CH₂ - CH₂ - C. Z 5 Triplet down field on ten upfield how sheiding quartet Sharp peale around 6.8 Wagh Sheilding ~2.3. peaks. In case of @ There is your one small peak arouma ~8.2 One Sharp peaks around NG.G. one quartet peak around 3.3 one triplet peak around a 1.3 Structure must be. -NH-CH₂ CH3 ~13 / 3 B. 3 the V triplet at4ppm quartet