An unknown compound gives the following spectral data. Propose a structure that is consistent with this information. In addition, show the fragmentations that give the 91 and 122 peaks in the MS.
MS (m/z): 91, 108 and 122 (M⁺)
¹H NMR (δ): 7.05(2H, d), 6.78 (2H, d), 3.7 (3H, s), 2.26 (3H, s)

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The Answer of An unknown compound gives the following spectral data. Propose a structure that is consistent with this information. In addition, show the fragmentations that give the 91 and 122 peaks in the MS. MS (m/z): 91, 108 and 122 (M⁺) ¹H NMR (δ): 7.05(2H, d), 6.78 (2H, d), 3.7 (3H, s), 2.26 (3H, s)

An Unknown Compound Gives the Following Spectral Data