Dimethylformamide → HCID 23364248, compound

Participants

Reaction Steps

0.2 g of sodium hydride as a 60% dispersion in oil is added to a mixture of 1 g of 5-ethoxy-1,3-dihydro-3-(pyrid-2-yl)-2H-benzimidazol-2-one, 25 ml of DMF and 25 ml of THF and the mixture is stirred for 30 minutes at RT. 1 g of 4-methoxycarbonyl-2-methoxybenzenesulfonyl chloride is then added and the mixture is stirred for 3 hours at RT. The reaction mixture is concentrated under vacuum, the residue is taken up with water, extracted with AcOEt, washed with water and dried over Na2SO4 and the solvent is evaporated off under vacuum to give 1 g of the expected product, which is used as such in the next step.

Provenance & Evidence