Imidazole → (2R)-1-{[(1,1-Dimethylethyl)(dimethyl)silyl]oxy}propan-2-ol

Participants

Reaction Conditions

Reaction Steps

To a solution of (s)-(+)-1,2-propanediol (2.0 g, 26.3 mmol) in DMF (5 mL) was added TBS-Cl (5.94 g, 39.4 mmol) and imidazole (2.147 g, 31.5 mmol). The reaction was stirred at 25° C. for 18 h. The reaction mixture was partitioned between ethyl acetate and sat. ammonium chloride. The organic phase was washed with sat ammonium chloride and brine, dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash chromatography to give 33A (4.0 g, 80% yield) as a colorless oil.

Provenance & Evidence