Ethyl orthoformate → HCID 22561687, compound

Participants

Reaction Steps

A solution of 3,5-dimethyl-4-(1-methyl-piperidin-4-yl)-1H-pyrrole-2-carboxylic acid (12.67 mmol) in TFA (75 mL) was stirred at 0° C. for 30 mins. To the mixture was added triethyl orthoformate (20 mL), it was then allowed to warm up slowly to rt for 2 hours. The solvent was removed and to the residue was added NaHCO3, extracted with ethyl acetate, dried and concentrated to give 2.56 g of 3,5-dimethyl-4-(1-methyl-piperidin-4-yl)-1H-pyrrole-2-carbaldehyde as a light yellow solid.

Provenance & Evidence