tert-Butyl 3-oxo-2-phenylpiperidine-1-carboxylate → HCID 19379354, compound

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Reaction Steps

A solution of 1-t-butoxycarbonyl-2-phenyl-piperidin-3-one (0.57 g, Example 48a)in 5 ml anhydrous tetrahydrofuran at -78° C. was treated with methyl magnesium bromide (1.6 ml of 1.5M solution in toluene-THF). The reaction was partitioned between saturated ammonium chloride-diethyl ether, the organic phase dried and evaporated in vacuo. The residue was chromatographed using 20% ethyl acetate in hexane as eluant to give 1-t-butoxycarbonyl, 3-methyl-2-phenyl piperidin-3-ol as a crystalline solid, m.p.=95°-97° C.

Provenance & Evidence