Water → HCID 19076412, compound

Participants

Reaction Steps

A solution of 1.084 g of 5-chloro-3-(2-chlorophenyl)-1,3-dihydro-3-[[2-(trimethylsilyloxy)ethyl]-amino]indol-2-one in 20 ml of DMF is cooled to 0° C. under an argon atmosphere and 0.111 g of sodium hydride as a 60% dispersion in oil is added. After stirring for 25 minutes, 0.78 g of 4-(N',N'-diethylureido)-benzenesulfonyl chloride is added and the reaction mixture is stirred for 3 hours at RT. It is poured into water and extracted with AcOEt, the organic phase is washed with water and with a saturated solution of NaCl and dried over sodium sulfate and the solvent is evaporated off under vacuum. The residue is chromatographed on silica using a DCM/AcOEt mixture (70/30; v/v) as the eluent to give 0.505 g of the expected product after crystallization and then recrystallization from a DCM/iso ether mixture. M.p.=192°-193° C.

Provenance & Evidence