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    NMR Spectrum and Reaction Mechanisms

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    I need some help with these questions:
    A. Explain the following NMR spectrum for N,N - Dimethylformamide. At room temperature, three peaks are observed:
    1. 2.9 (singlet, 3H)
    2. 3.0 (singlet 3H)
    2. 8.0 (singlet, 1H)

    As the temperature is raised, only 2 peaks are observed:
    1. 2.95 (singlet, 6H)
    2. 8.0 (singlet, 1H)

    B. Write a complete stepwise mechanism for the reaction shown below. Show intermediate structures and electron flows with arrows. See attachment.

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    Solution Summary

    This handwritten solution contains a stepwise mechanism and explains the NMR spectrum for N,N-Dimethylformamide and its associated peaks.