Acetic Acid → 4-(Hydroxymethyl)-2-Isopropylthiazole

Participants

Reaction Conditions

Reaction Steps

A solution containing the product from Example 56B (18 g, 90.5mmol) in dichloromethane (100 mL) was treated with diisobutyl aluminum hydride (150 mL, 1 M in dichloromethane) dropwise at −78° C. over 2 hours and the mixture was stirred at −78° C. for 2 hours. Acetic acid (10 mL) was added at −78° C. and the mixture was warmed to 25° C. A 10% solution of aqueous sodium potassium tartrate was added and the mixture was stirred vigorously for 1 hour. The reaction was partitioned between dichloromethane and water, and the organic phase was washed with brine and dried over MgSO4, filtered and concentrated. The residue was chromatographed on silica gel eluting with 0-5% ethyl acetate/dichloromethane to give the title compound (3.84 g, 27% yield).

Provenance & Evidence