N,N-Dimethylpropargylamine → (Z)-1,3-dihydro-4-[3-(N,N-dimethylamino)-1-propynyl]-5-fluoro-3-[(4-methyl-1H-imidazol-5-yl)methylene]-2H-indol-2-one

Participants

Reaction Steps

Using Method C above, N,N-dimethyl propargylamine (42.2 mg, 0.51 mmol) (Aldrich) was coupled with (Z)-1,3-dihydro-5-fluoro-4-iodo-3-[(4-methyl-1H-imidazol-5-yl)methylene]-2H-indol-2-one (75 mg, 0.203 mmol) (Starting Material 3 supra) using (Ph3P)4Pd (23.5 mg) and Cul (4 mg) as catalyst in DMF (3 mL) and Et3N (3 mL) as solvent at 80° C. for 6 h to give (Z)-1,3-dihydro-4-[3-(N,N-dimethylamino)-1-propynyl]-5-fluoro-3-[(4-methyl-1H-imidazol-5-yl)methylene]-2H-indol-2-one. (Yield 40 mg, 61%).

Provenance & Evidence