Hydrochloric Acid → HCID 12985405, compound

Participants

Reaction Steps

The product of step 1 (500 mg, 1.84 mmoles) was dissolved in a mixture of tetrahydrofuran (9 mL) and methanol (1 mL), the solution was cooled in an ice-bath, and sodium borohydride (72 mg, 1.90 mmoles) was added in one portion. Stirring was continued in the ice-bath for 15 min, and ethyl acetate (50 mL) and M hydrochloric acid (1.5 mL) were added. The aqueous layer was separated, extracted with ethyl acetate (20 mL), and the combined organic layers were washed with saturated sodium bicarbonate (40 mL), dried over anhydrous magnesium sulfate and evaporated to give benzyl 3-hydroxy-4-bromobutanoate (433 mg, 86%). 1HMR (CDCl3, δ): 7.36 (5H, s), 5.17 (2H, s), 4.26 (1H, m), 3.50 (1H, dd, 5.0, 10.5 Hz), 3.47 (1H, dd, 5.6, 10.5 Hz), 3.06 (1H, d, 541 Hz), 2.72 (1H, dd, 5.0, 16.6 Hz), 2.69 (1H, dd, 7.3, 16.6 Hz). IR (neat): 3443, 3064, 1731, 1624 cm−1. Mass spectum (CI,m/z): 273, 275 (M+1, M+3). Calcd. for C11H13BrO3.0.5H2O: C 53.75; H 5.88. Found: C 53.65; H 5.60.

Provenance & Evidence