Hexamethylenetetramine → HCID 178497565, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 4-(6-Methoxy-1H-benzoimidazol-2-yl)-benzoic acid methyl ester (1.50 g, 5.3 mmol), hexamethylenetetramine (1.50 mg, 10.60 mmol) and trifluoroacetic acid (12 mL) was stirred in a closed vessel under an argon atmosphere at 130° C. for 3 h. The resultant brown solution was poured onto 250 mL of crushed ice. The mixture was extracted with, chloroform-ethanol 95:5 (2×0.100 mL). The combined organic layers were dried (Na2SO4), and evaporated. The solid residue was purified by column chromatography over silica (Kieselgel 60) using chloroform as the eluent to give title compound (350 mg, 1.13 mmol, 21%) yellow crystals.

Provenance & Evidence