N-methylpropyn-2-ylamine → 4-(3-Methylamino-1-propinyl)-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone

Participants

Reaction Steps

In a similar manner to Step 2 of Example 161, 4-trifluoromethanesulfonyloxy-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone (80.0 mg, 0.135 mmol) was dissolved in diethylamine (4.0 mL), and the solution was treated with bis(triphenylphosphine)dichloropalladium (14.3 mg, 0.203 mmol), copper iodide (11.6 mg, 0.0608 mmol) and N-methylpropargylamine (0.114 mL, 1.35 mmol), followed by purification by preparative thin-layer chromatography (chloroform/methanol=5/1 to 3/1) to obtain 4-(3-methylamino-1-propinyl)-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone (32.6 mg, yield 47%).

Provenance & Evidence