Triethylamine → HCID 10344934, compound

Participants

Reaction Steps

To a room temperature solution of INTERMEDIATE 5a (250 mg; 0.54 mmol) in dichloromethane (5 mL) were added triethylamine (0.15 mL; 1.08 mmol), DMAP (cat.) and cyclohexane carbonyl chloride (86 μL; 0.64 mmol). The reaction mixture was stirred for 5 hours then more triethylamine (0.08 mL; 0.58 mmol) and DMAP (cat.) were added. The reaction mixture was stirred overnight then more cyclohexane carbonyl chloride (28 μL; 0.21 mmol) was added. The reaction mixture stirred for 5 hours then was washed with two portions of saturated sodium bicarbonate. The organic phase was dried over anhydrous sodium sulphate, filtered and concentrated under reduced pressure. Column chromatography eluting with 2% methanol in dichloromethane gave the desired product.

Provenance & Evidence