Piperonal → HCID 9909713, compound

Participants

Reaction Steps

Using Method D above, 3-(1,3-benzodioxol-5-yl)-3-hydroxy-1-propyne (110 mg, 0.62 mmol) (prepared by the addition of ethynylmagnesium chloride (Aldrich) to piperonal (Aldrich) according to Method A above) was coupled to (Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (100 mg, 0.34 mmol) (Starting Material 1) using (Ph3P)2PdCl2 (30 mg) (Aldrich) and CuI (16 mg) (Aldrich) as catalyst in DMF (3 mL) and Et3N (3 mL) as solvent at 70° C. for 16 h, yielding rac-(Z)-4-[3-(1,3-benzodioxol-5-yl)-3-hydroxy-1-propynyl]-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one. (Yield 46 mg, 33%).

Provenance & Evidence