Benzyl Bromide → HCID 10589829, compound

Participants

Reaction Steps

The reaction of 3-methyl-1-phenylmethyl-2-piperidinone (3.65 g, 18 mmol) with benzyl bromide (4.84 g, 28.3 mmol) in the presence of lithium diisopropylamide (prepared by treating diisopropylamine (2.73 g, 27 mmol) with butyllithium in hexanes (2.5 M, 10.3 mL, 25.7 mmol)) in THF (45 mL) and HMPA (2.7 mL, 15.5 mmol) as described above in the preparation of Example 10, gave 8.80 g of pale yellow colored oil. Column chromatography over silica gel (hexanes-EtOAc, 9:1) afforded the product lactam (3.72 g, 71%) as a colorless viscous residue. Analytical sample was prepared by bulb-to-bulb distillation (pot temp. 150-155° C. (1.3 mmHg)).

Provenance & Evidence