1-(6-Methylpyridin-2-yl)piperazine → 5-Cyano-1-(2,4-dimethoxybenzenesulfonyl)-3-(2-ethoxyphenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl 4-(6-methylpyridin-2-yl)piperazine-1-carboxylate

Participants

Reaction Steps

0.1 g (0.16 mmol) of intermediate 1d and 115 mg (0.65 mmol) of 1-(6-methylpyridin-2-yl)piperazine were stirred in 3 ml of DMF at 100° C. for 20 minutes. The reaction mixture was then poured into 30 ml of ice-water/K2CO3. The resulting precipitate was isolated and crystallized from a little methanol, resulting 0.1 g of the product.

Provenance & Evidence