4-Chlorobenzenesulfonyl chloride → HCID 25263461, compound

Participants

Reaction Steps

To a solution of S-tert-leucinol (0.20 g, 1.70 mmol), triethylamine (0.19 g, 1.87 mmol) and methylene chloride (10 mL) at 0° C., was added a solution of 4-chloro benzenesulfonyl chloride (0.36 g, 1.70 mmol) in CH2Cl2 (5 mL). After 15 minutes the ice bath was removed and the reaction allowed to reach 25° C. After 16 hours, the reaction was quenched by pouring into saturated sodium bicarbonate solution (20 mL) and additional methylene chloride (15 mL). The organic phase was separated and washed sequentially with 1N HCl solution (20 mL), distilled water and brine, dried over MgSO4 and evaporated to give the desired product as a white solid, mp 128-130° C. (0.46 g, 94%). MS (+APCI) 292.06 ([M+H]+). Anal. Calc'd for C12H18ClNO3S: C, 49.39; H, 6.22; N, 4.80. Found: C, 49.40; H, 6.17; N, 4.79.

Provenance & Evidence