Identify the structures of isomers A and B (molecular formula C9H10O). Compound A: IR

Chapter 14, Problem 14.55

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Identify the structures of isomers A and B (molecular formula C9H10O). Compound A: IR peak at 1742 cm1; 1 H NMR data (ppm) at 2.15 (singlet, 3 H), 3.70 (singlet, 2 H), and 7.20 (broad singlet, 5 H). Compound B: IR peak at 1688 cm1; 1 H NMR data (ppm) at 1.22 (triplet, 3 H), 2.98 (quartet, 2 H), and 7.287.95 (multiplet, 5 H).

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