Cesium carbonate → Tert-butyl 6-(benzenesulfonylmethyl)-3-(2-formylfuran-3-yl)-2-(2-hydroxyacetylamino)-benzoate

Participants

Reaction Conditions

Reaction Steps

A mixture of tert-butyl 6-(benzenesulfonylmethyl)-3-bromo-2-(2-hydroxyacetylamino)benzoate (Intermediate 36, 0.165 g), 2-formylfuran-3-boronic acid pinacol ester (0.091 g), 1,1′-bis(diphenylphosphino)ferrocene palladium dichloride DCM complex (0.028 g) and cesium carbonate (0.311 g) in THF (4.3 mL) and water (0.7 mL) were sealed, under nitrogen, in a microwave vial and heated in the microwave at 140° C. for 10 minutes. After cooling, the mixture was diluted with ethyl acetate and water and the organic layer was separated, washed with brine, dried (Na2SO4) and filtered. The filtrate was evaporated to dryness to give tert-butyl 6-(benzenesulfonylmethyl)-3-(2-formylfuran-3-yl)-2-(2-hydroxyacetylamino)-benzoate (0.17 g).

Provenance & Evidence