Water → HCID 86587987, compound

Participants

Reaction Conditions

Reaction Steps

5-(1-Allyl-3-m-tolyl-1H-pyrazol-4-yl)-1,3-diethyl-1,3-dihydro-benzoimidazol-2-one (obtained in the using the same procedure as utilized for the preparation of [4-(1,3-Diethyl-2-oxo-2,3-dihydro-1H-benzoimidazol-5-yl)-5-m-tolyl-pyrazol-1-yl]-acetic acid tert-butyl ester (0.135 g), substituting allyl iodide for t-butyl bromoacetate) (0.107 g) was diluted with t-butanol (3 mL). To this solution was added water (3 mL), sodium periodate (0.120 g) and catalytic osmium tetroxide (0.1 mL, 2.5% solution in t-butanol). The mixture was stirred at 23° C. for 2 hours then was diluted with ethylacetate and saturated sodium bicarbonate and extracted. The organic layer was dried over sodium sulfate and concentrated. Subsequent chromatography on silica gel gave [4-(1,3-Diethyl-2-oxo-2,3-dihydro-1H-benzoimidazol-5-yl)-3-m-tolyl-pyrazol-1-yl]-acetaldehyde (0.06 g).

Provenance & Evidence