3-Carboxybenzaldehyde → HCID 57979992, compound

Participants

Reaction Steps

1-[2-(Methylamino)ethyl]piperidin-4-yl biphenyl-2-ylcarbamate (1.00 g, 2.83 mmol) was dissolved in dichloromethane (20 mL), 3-formylbenzoic acid (425 mg, 2.83 mmol), 0-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluroniumhexafluorophosphate (1.08 g, 2.83 mmol) and diisopropylethylamine (1.48 mL, 8.49 mmol) were added under ice cooling, and the mixture was stirred at room temperature under a nitrogen atmosphere for 16 hours. After the reaction was completed, a saturated aqueous sodium hydrogencarbonate solution was added, and ethyl acetate was further added to separate the layers. The resulting organic layer was separated, washed with saturated sodium chloride solution, and then dried with anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by NH silica gel column chromatography (ethyl acetate:methanol, 10:1, v/v) to give the title compound (1.54 g; yield, 100%) as a colorless oily substance.

Provenance & Evidence