Triethylamine → HCID 13772746, compound

Participants

Reaction Steps

A suspension of 1.08 g (4.0 mmol) of 7-chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, 0.93 g (5.0 mmol) of 2-[(t-butoxycarbonylamino)methyl]azetidine, 1.01 g (10 mmol) of triethylamine and 50 ml of acetonitrile was stirred at reflux for two hours. The solvent was removed in vacuo and the residue was dissolved in 25 ml of trifluoroacetic acid. After stirring at room temperature for two hours, the solvent was removed in vacuo. The residue was suspended in water and the pH adjusted to 11 with 10% sodium hydroxide. The resulting solution was filtered through a fiber glass pad to clarify and the filtrate acidified to pH 7.2 with 1 M hydrochloric acid. The resulting precipitate was removed by filtration, washed successively with water, ethanol, ether and dried in vacuo to give 0.66 g (52%) of the title compound, mp 198°-200° C.

Provenance & Evidence