反应详情

A 1.0 M solution of lithium aluminum hydride in tetrahydrofuran (9.36 mL, 9.36 mmol) was added dropwise to a solution of cis-ethyl 2-(4-chlorophenylsulfonamido)cyclopentanecarboxylate (2.07 g, 6.24 mmol) in 40 mL anhydrous tetrahydrofuran under nitrogen at 0° C. The reaction was then stirred for 1 h at room temperature, then quenched by the slow addition of 100 mL ethyl acetate. The reaction was partitioned between 600 mL ethyl acetate and 300 mL saturated ammonium chloride. The organic layer was dried on sodium sulfate and concentrated to yield 4-chloro-N-(cis-2-(hydroxymethyl)cyclopentyl)benzenesulfonamide (1.81 g, 100%). 1H NMR (400 MHz, CDCl3) δ ppm 7.77-7.85 (2H, m), 7.45-7.50 (2H, m), 5.38 (1H, d, J=7.05 Hz), 3.61-3.78 (3H, m), 2.04-2.15 (1H, m), 1.27-1.80 (7H, m). LC/MS R.T.=2.46 min; [M+H]+=290.10.

1. customquenched by the slow addition of 100 mL ethyl acetate
2. customThe reaction was partitioned between 600 mL ethyl acetate and 300 mL saturated ammonium chloride
3. customThe organic layer was dried on sodium sulfate
4. concentrationconcentrated