Lithium diisopropylamide → HCID 68534124, compound

Participants

Reaction Steps

At −78° C., lithium diisopropylamide solution (2 M in THF/n-heptane, 17 ml, 34 mmol) was slowly added dropwise to ethyl(tert-butoxycarbonylmethylamino)acetate (7.4 g, 34 mmol) in tetrahydrofuran (abs., 50 ml). The mixture was stirred at this temperature for 2 h. 1-Bromomethyl-2-iodobenzene (10.0 g, 46 mmol) was then slowly added dropwise, and the mixture was stirred at −78° C. for 1 h. The reaction solution was slowly (12 h) warmed to room temperature and then concentrated on a rotary evaporator. The residue was taken up in ethyl acetate, washed, dried and concentrated. The residue obtained in this manner was then purified by column chromatography (SiO2, hexane/ethyl acetate). This gave 6.4 g (43%) of the target compound.

Provenance & Evidence