Question

For the protons in the positions a and b in the structure below, predict the characteristics of their signals in the H NMR spectrum: the approximate chemical shift, the splitting pattern, and the integration value of their signals. Approximate Integration Splitting chemical shift value 1H NMR signal 1 ppm O singlet 1H for H O 2H O doublet C 2 ppm O 3-4 ppm 3H O triplet O 4H O 5-6 ppm quartet O 5H O 7-8 ppm O quintet O 6H O multiplet 1H NMR signal O singlet 1H 1 ppm for H O 2H O 2 ppm O doublet O 3-4 ppm O triplet 3H O 4H O 5-6 ppm quartet O 5H CO 7-8 ppm O quintet O 6H multiplet

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