[OH:1][CH:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9](Br)[CH:10]=2)[C:4](=[O:5])[O:3]1.[CH3:13][O:14][C:15]1[CH:22]=[CH:21][C:18]([CH:19]=[CH2:20])=[CH:17][CH:16]=1.C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.C(N(CC)CC)C>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.O.CS(C)=O>[CH3:13][O:14][C:15]1[CH:22]=[CH:21][C:18](/[CH:19]=[CH:20]/[C:9]2[CH:10]=[C:11]3[C:6](=[CH:7][CH:8]=2)[C:4](=[O:5])[O:3][CH:2]3[OH:1])=[CH:17][CH:16]=1A mixture of 9.9 gm 3-hydroxy-5-bromophthalide, 5.8 gm p-methoxystyrene, 0.09 gm palladium acetate, 0.47 gm tri-(o-tolyl)-phosphine, 7 ml triethylamine and 35 ml dimethylsulfoxide were heated with stirring at 95° for 5 hours. The reaction mixture was cooled and added to 400 ml water. The product was extracted into ethyl acetate, which solution was washed with water and dried over magnesium sulfate. Removal of solvent left 8.0 gm yellow solid melting at 140°-148°.
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