as an eluent. The resultant material was added to 80 mL of concentrated H2S04 stirred at 0 °C. The reaction mixture was stirred 1.75 h at 0 °C until a homogenous solution was obtained.Ice was added, and the aqueous phase was extracted with ether. The organic phase was dried and the solvent removed under reduced pressure to give an oil which was subjected to MPLC on silica with 1:99 ether/hexane as an eluent to afford a clear, colorless oil. The oil was treated with 2,4-dinitrophenylhydrazone solution to give 2.71 (18%) of the 2,4-dinitrophenylhydrazone of cyclohexyl ethyl ketone as an orange solid, mp 147-148 °C (lit.32 mp 149-151 °C).
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