Diazomethane → HCID 22402972, compound

Participants

Reaction Steps

A solution of diazomethane in ether is added to a suspension of 1-benzyl-4-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-2-methyl-5-benzimidazolecarboxylic acid (1.15 g, 2.84 mmol) in methanol until the yellow color persists. The reaction is stirred for 5 minutes, quenched with 2 drops of acetic acid and concentrated in vacuo. The resultant residue is purified by HPLC (silica gel, ethyl acetate eluent) to give the title product as a white powder (0.480 g, 40.3%), mp 194°-196° C.

Provenance & Evidence