Triethylamine → diethyl 2-(4-amino-3-chloro-5-trifluoromethyl-benzyl)-2-{2-oxo-2-[4-(2-oxo-1,4-dihydro-2H-quinazolin-3-yl)-piperidin-1-yl]-ethyl}-malonate

Participants

Reaction Steps

3.2 mL (23.0 mmol) of triethylamine were added dropwise to a solution of 8.00 g (19.0 mmol) of 4-(4-amino-3-chloro-5-trifluoromethyl-phenyl)-3,3-bis-ethoxycarbonyl-butanoic acid, 4.39 g (19.0 mmol) of 3-piperidin-4-yl-3,4-dihydro-1H-quinazolin-2-one, 6.00 g (18.0 mmol) of TBTU and 2.75 g (18.0 mmol) of HOBT in 100 mL of THF and the mixture was stirred for 16 h at RT. The solid formed was filtered off, washed with diethyl ether and dried i. vac.

Provenance & Evidence