1(a). Consider the compound with molecular formulaC4H8O2. Draw the structures ofthree isomers that match the following 1H NMRinformation.
Isomer A: 1H singlet at 8.2 ppm, 2H triplet at4.2 ppm, 2H sextet at 1.8 ppm, 3H triplet at 0.9 ppm
Isomer B: 2H quartet at 4.2 ppm, 3H singlet at2.4 PPM, 3H triplet at 1.2 ppm
Isomer C: 3H singlet at 3.8 ppm, 2H quartet at2.4 ppm, 3H triplet 1.2 ppm
(b) The mass spectrum of compound A shows molecular ion peak atm/z 88. The IR spectrum of this compound has a broad peak between3200 and 3550 cm-1. The 1H NMR spectrum of A shows thefollowing peaks: a triplet at d 0.9, a singlet at d 1.1, one moresinglet at d 1.15, and a quartet at d 1.6. The area ratio of thesepeaks is 3:6:1:2. The 13C NMR contains 4 signals. In thespace below, propose a structure for A and justify your claim usingthe data provided.
