Hydrochloric Acid → HCID 178442812, compound

Participants

Reaction Steps

160 ml of ethanol, 13.0 g (70.5 mmol) of 1-dodecanal and 1.5 ml of concentrated hydrochloric acid were added to 8.0 g (35.1 mmol) of N1-benzyl-biguanide hydrochloride. The mixture was refluxed for 16 hours, and concentrated under reduced pressure to remove the solvent. The residue was purified by silica gel column chromatography, and the first main fraction eluted with a mixture of chloroform and methanol (9:1.5) was recrystallized from 80% aqueous ethanol to obtain 3.1 g of colorless crystals (1) having a melting point of 152 to 155° C. The second main fraction was recrystallized from 80% aqueous ethanol to obtain 0.9 g of colorless crystals (2) having a melting point of 153 to 156° C.

Provenance & Evidence