Sodium Hydroxide → HCID 90421848, compound

Participants

Reaction Steps

In a 100 ml 3-necked flask, 100 mg (0.145 mmol) of (S)—N-(5-cyano-1-((2,4-dimethoxyphenyl)sulfonyl)-3-(2-ethoxypyridin-3-yl)-2-oxoindolin-3-yl)-4-(piperidin-4-yl)-piperazine-1-carboxamide were stirred in 4 ml of dichloromethane. 10.45 mg (0.145 mmol) of oxetan-3-one dissolved in 2 ml of dichloromethane were added and the mixture was stirred for 5 min. 30.7 mg of Na2SO4 were added and the mixture was stirred for another 5 min. 17.41 mg of acetic acid were added and the reaction was stirred for another 30 min. 46.1 mg (0.217 mmol) of sodium triacetoxyhydroborate were added and the reaction was stirred overnight. 1 ml of 2N NaOH and then 7 ml of water were added and the mixture was extracted thrice with ethylacetate and water. The organic phase was died over MgSO4 and the solvent was removed. The resulting crude product was subjected to flash chromatography (silica gel/gradient from 0 to 5% methanol in dichloromethane) to yield 26.4 mg (24.4%) of the title compound.

Provenance & Evidence