4-Methylmorpholine → 5-(4-Trifluoromethoxy-phenyl)-pent-4-ynoic acid methoxy-methyl-amide

Participants

Reaction Steps

A solution of 1.00 g (3.87 mmol) of 5-(4-trifluoromethoxy-phenyl)-pent-4-ynoic acid (example 29D]) in 50 ml CH2Cl2 was treated with 0.45 g (4.65 mmol) N,O-dimethylhydroxylamine hydrochloride, 0.55 ml (5.03 mmol) N-methylmorpholine and at 0° C. with 0.97 g (5.03 mmol) N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDCI). The reaction was naturally warmed to ambient temperature over night and partitioned between aqueous 10% KHSO4/ether (three times). The organic phases were washed with aqueous saturated NaHCO3, 10% NaCl and dried (Na2SO4) to give 1.165 g of the title compound as brown oil.

Provenance & Evidence