3-Methyl-1-pentyn-3-ol → rac-(Z)-1,3-dihydro-4-(3-hydroxy-3-methyl-1-pentynyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one

Participants

Reaction Steps

Using Method D above, 3-methyl-1-pentyn-3-ol (75 mg, 0.75 mmol) (Aldrich) was coupled with (Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (Starting Material 1 supra) (200 mg, 0.63 mmol) using (Ph3P)2PdCl2 (25 mg) and Cul (12 mg) as catalyst in DMF (3 mL) and Et3N (3 mL) as solvent at 70° C. for 17 h to yield rac-(Z)-1,3-dihydro-4-(3-hydroxy-3-methyl-1-pentynyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one. (Yield 66 mg, 31%).

Provenance & Evidence