Deduce the structures of the following compounds. (a) C4H8O: IR 1717 cm-1 NMR 0.95 (3H, t, J
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(a) C4H8O: IR 1717 cm-1
NMR δ0.95 (3H, t, J = 8 Hz); δ 2.03 (3H, s): δ 2.38 (2H. q, J = 8 Hz)
(b) A compound with molecular mass = 70.1, IR absorption at 1780-cm-1, and the following NMR spectrum: δ 2.01 (quintuplet, J = 7 Hz): δ 3.09 (t, J = 7 Hz). The integral of the δ 3.09 resonance is twice as large as that of the 8 2.01 resonance.
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