Question

6) What 1 H NMR spectral data is expected for the compound shown? A) 2.6 (1H, septet), 2.1 (3H, S), 1.0 (6H, d) C) 3.8 (1H, septet), 3.3 (3H, 5), 1.0 (6H, d) B) 3.3 (3H, s), 2.6 (3H, septet), 1.0 (6H, d) D) 3.8 (1H, septet), 2.1 (3H, 5), 1.0 (6H, d)

Answer 1

The expected 1H NMR spectral data for the compound shown is 3.8 (1H, septet), 2.1 (3H, 5), 1.0 (6H, d).

Step-by-step explanation:

The 1 H NMR spectral data expected for the compound shown is option D) 3.8 (1H, septet), 2.1 (3H, 5), 1.0 (6H, d).

The key information provided in the question is the chemical shift values and their respective multiplicities. The chemical shift values indicate the positions of the protons in the molecule, while the multiplicities indicate the splitting pattern caused by neighboring protons.

In the given options, option D matches the chemical shifts and multiplicities provided in the question.

Answer 2

The expected 1 H NMR spectral data for the compound shown is 3.8 (1H, septet), 2.1 (3H, 5), 1.0 (6H, d).

Step-by-step explanation:

The 1 H NMR spectral data expected for the compound shown is option D) 3.8 (1H, septet), 2.1 (3H, 5), 1.0 (6H, d).

In the given options, this is the only one that matches the reported chemical shifts and multiplicities.

Based on the data provided, the compound has a septet at 3.8 ppm, representing a proton with six neighboring protons, a doublet at 2.1 ppm, representing three equivalent protons, and a doublet at 1.0 ppm, representing six equivalent protons.