Hydrogen Peroxide → HCID 15069316, compound

Participants

Reaction Steps

2.01 g (5.0 mmol) of 4'-[(2-ethylthiomethyl-benzimidazol-1-yl)-methyl]biphenyl-2-carboxylic acid are dissolved in 25 ml of glacial acetic acid and treated with 0.51 ml of 30% strength hydrogen peroxide. The solution is allowed to stand for 24 hours at ambient temperature and is then evaporated to dryness. The residue is purified over a silica gel column (grain size: 40-63 μm, eluting agent: methylene chloride/ethanol/glacial acetic acid=50/1/0.15). The homogeneous fractions are combined, the solvents are distilled off, the residue is dissolved in methylene chloride and washed three times using water. The organic phase is dried using magnesium sulphate and evaporated to dryness. The crystalline residue is mixed with diethylether, the mixture is filtered under suction and the crystals are dried at 75° C. in vacuum.

Provenance & Evidence