Question

1. How many different sets of "chemically equivalent protons" are on each of these different compounds?

2. Give the splitting pattern for the designated protons on the following molecules.

3 Which type of spectroscopy can most easily be used to tell these two compounds apart? (Note superscripted number denotes mass number of isotope of oxygen)

10. Identify which compound best matches the following spectral data.

1. How many different sets of "chemically equivalent protons" are on each of these different compounds? (6 points) CH3 O=CH 2. Give the splitting patterns for the designated protons on the following molecules (6 points, 1 each) (HE CH H,C-CYCH, CH-0 CH HC CH -CI -C (H HC CHỊ | CH-0 CH). нус CH, 3. Which type of spectroscopy can most easily be used to tell these two compounds apart? (Note superscripted number denotes mass number of isotope of oxygen)(6 points) H,C-C-o'CH, H.c-C-OCH 10. Identify which compound best matches the following spectral data. (6 points) NMR 10.5 ppm, singlet (1 H) 8.5 ppm, doublet (2 H) 7.5 ppm, doublet (2 H) 3.8 ppm, singlet (3 H) IR strong signal 1715 cm': MS parent peak 136 OH O=C-H H Hc-C-c-C-OCH OCH,

Answer 1

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acc to HINAR @ 10.5 ppm rungut l'H) → CHO group ③ 8.5 ppm doublet (2H) > ① 7.5 ppm doublet (2H) - 4 @ 3.6 ppm singlet (3H) -OCH 3 compound ěs ® so