Triethylamine → Tert-butyl [1-(4-fluorophenyl)-2-oxo-2-pyridin-3-ylethyl]carbamate

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

10.0 g (26.4 mmol) of tert-butyl [(4-fluorophenyl)(toluene-4-sulfonyl)methyl]carbamate, 665 mg (2.6 mmol) of 3-ethyl-5-(2-hydroxyethyl)-4-methylthiazolium bromide, 55 ml (395 mmol) of triethylamine and 5.6 g (26.4 mmol) of 3-pyridinecarboxaldehyde were mixed in 230 ml of methylene chloride at room temperature and then heated at 35° C. for 3 h. After reaction of the aldehyde was complete, 100 ml of saturated ammonium chloride solution were added, and the reaction mixture was stirred for 10 minutes. After removal of the aqueous phase, the organic phase was washed with 0.5 M sodium hydroxide solution and saturated sodium chloride solution. 9.7 g of tert-butyl [1-(4-fluorophenyl)-2-oxo-2-pyridin-3-ylethyl]carbamate were obtained and were reacted further without purification.

Herkunft & Nachweise