Question

2. Predict the number of signals and the splitting pattern (s,d,t, etc) for each of the hydrogens in the 'H NMR spectrum of the compound below. (14 points) CH3 -CH2-O-CH3

Answer 1

Number of signals and the splitting pattern for hydrogens in NMR Spectrum

Predict the number of signals and the splitting Puttern (5, d,t, etc) for each of the hydrogens in the "H NMR spectrum of the compound below. CH₃ C (singlet) Hd cdoublets (doublet) Hy (doublet) e " H er cdoublet) CH2=0-CH3 b(single) a singlet) Explanethion :- In above compound Predict number of Signal & splitting Pattern, Compound contains 2 CH3 groups. having different nature, one cH₃-group is attach to o-ubom 4 another CH₂- group is attached to benzene ring of gives two different signals of represented by a cletter. Both Chizo groups are singlet beluise there i3 no neighour'ng Hoahom group. Compounds contain f CH2-groups fgive. HNMR signuls.f represented by letter-b.there 13 no neighourer Hatom group it becomes singlet. Remaining wo signals are. Ho atoms of benzene ring. Two H-atome he same natura. } represent by letter at gives doublet another two H atoms ar same natur represent letter s sives doublet, because of H aroms are neighouser two each other.