Question

compound below best fits the following spectral data? (6 points) ppm (quartet 3 hydrogens: 1.2 ppm (sextet 2 hydrogens). 2.1 ppm (tnplet, 2 hydrogens), 4.3 ppm (singlet 3 hydrogens) C NMR S signals 25 ppm (CH): 35 ppm (CH2). 46 ppm (CH2): 61 ppm; (CH) 198 ppm (C), IR strong peak 1735 cm Mass Spec parent M+ = 102 0=0 H2O H₂c-cc- сна HEC-C-c- H2 H₃C spectra of the 8. How many signals would you expect to see in the broadband decoupled C following compounds? (6 points) OO-C-CH₃ H CH3 H₂ CH HC-CH-CH2 HC 0 CHE CH3 CH3 HC H CEC H CH3 NH2

can someone please help with qurestion 7 and 8? with a step by step explanation of the answers please and thank you

Answer 1

7 The compound that best compound that best fits the spectral data is (6) - CH, CH - CH - - 1 single, 3 hydrogens) K. (toiplet, 2 hydrogens) 0394.3 ppm (Sextet, 2 hydrogens) S: 2.1 ppm 8=1.2 ppm. 0 # All the chemical shifts values matches with their most probable range. CH3 -CHą being die ectly connected with electro- negative oxygen it should have high & pawe beste ween 3.8-405 ppor. for further -cthy ; 8 value decreases than the che directly connected with c- grouping. #IR peak at 1735 cmt is strong for functional # IR ester strony Poroup, Bom estee functional which also fits. 8 How . CH₂ Che orch CHis CH za 4 4 signals. 10 signals. - Both-Chy are equivalent t . - 4 signals Cha c =C CH₂ H Hz Symmetry is presen't. 4 signals of signals. - 4 signals