68. Which reaction sequence is required to accomplish the following transformation?
O
O
? I. heat II. NaOH, heat, then HCl, H2O III. NaOH IV. CH3COCH2CO2Et, EtONa
(A) I → II → III → IV (B) IV → II → I → III (C) III → VI → II → I
(D) II → IV → III → I (E) None of the above
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I. heat II. NaOH, heat, then HCl, H2O III. NaOH IV. CH3COCH2CO2Et, EtONa
