Triethylamine → HCID 178473978, compound

Participants

Reaction Steps

To a -10° C. methylene chloride (2 mL) solution of ethyl chloroformate (57 mg, 0.53 mmol) was added a methylene chloride (2 mL) solution of compound 29 (220 mg, 0.44 mmol) and triethylamine (530 mg, 0.13 mmol). The resultant solution was stirred between -5° C. and 5° C. for 1 h. Glycine benzyl ester hydrochloride (0.11 g, 0.64) was added, followed by triethylamine (0.53 g, 0.13 mmol). The resulting suspension was stirred at room temperature for 21 h and filtered through a sintered glass funnel. The solid was washed with methylene chloride. The filtrate and the washing portion were combined and washed with 1N HCl, dried (MgSO4), and concentrated. The residue was purified by silica gel chromatography (Et2O:EtOAc/9:1) to afford 140 mg (47%) of the title product.

Provenance & Evidence