反应详情

Using Method D above, 3-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-1-propyne (197 mg, 1.1 mmol) (prepared by the addition of ethynylmagnesium chloride (Aldrich) to vanillin (Aldrich) according to Method B above) was coupled to (Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (Starting Material 1) (116 mg, 0.36 mmol) using (Ph3P)2PdCl2 (33 mg) (Aldrich) and CuI (18 mg) (Aldrich) as catalyst in DMF (3 mL) and Et3N (3 mL) as solvent at 70° C. for 16 h, yielding rac-(Z)-1,3-dihydro-4-[3-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-1-propynyl]-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one. (Yield 31 mg, 21%).