Acetic Acid → 4-Methanesulfonyloxy-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-(cyclopropylaminomethyl)indol-2-yl]isoindolinone

Participants

Reaction Steps

In a similar manner to Step 2 of Example 6, 4-methanesulfonyloxy-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-formylindol-2-yl]isoindolinone (50 mg, 0.100 mmol) was dissolved in acetonitrile (2.9 mL), and the solution was treated with cyclopropylamine (0.069 mL, 1.0 mmol), acetic acid (0.115 mL, 2.00 mmol) and sodium triacetoxyborohydride (64 mg, 0.30 mmol) to obtain 4-methanesulfonyloxy-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-(cyclopropylaminomethyl)indol-2-yl]isoindolinone (39.1 mg, yield 72%).

Provenance & Evidence