Triethylamine → 4-(2-Cyanobenzenesulfonyloxy)-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone

Participants

Reaction Steps

In a similar manner to Step 1 of Example 227, 4-hydroxy-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]-isoindolinone (0.115 g, 0.249 mmol) was dissolved in acetonitrile (5.0 mL), and the solution was treated with triethylamine (0.104 mL, 0.747 mmol) and 2-cyanobenzenesulfonyl chloride (0.0750 g, 0.374 mmol), followed by purification of the residue by flash column chromatography (chloroform/methanol=85/15) to obtain 4-(2-cyanobenzenesulfonyloxy)-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone (0.137 g, yield 88%).

Provenance & Evidence