Formaldehyde → HCID 23130732, compound

Participants

Reaction Steps

To a solution of 6-amino-N-(5-(3-chloro-benzyl)-thiophen-2-ylmethyl)-nicotinamide described in Example A-145 (110 mg, 0.3 mmol) in methanol (10 mL) were added 5,5-dimethylimidazo phospho-2,4-dione (43 mg, 0.33 mmol) and an aqueous solution of 37% formaldehyde (0.5 mL), and the solution was stirred under reflux for 2 hours. NH silica gel was added to the reaction solution, the solvent was evaporated in vacuo for adsorption, purification was carried out by NH silica gel column chromatography (hexane:ethyl acetate=1:1, then ethyl acetate), and the title compound (65 mg, 0.16 mmol, 54%) was obtained as a slightly yellow solid.

Provenance & Evidence