2-Phenyl-benzofuran → 3-(3-Methyl-4-methoxybenzoyl)-2-phenylbenzofuran
Reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][C:10]=1[O:11][CH3:12])[C:5](Cl)=[O:6].[C:13]1([C:19]2[O:20][C:21]3[CH:27]=[CH:26][CH:25]=[CH:24][C:22]=3[CH:23]=2)[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1>C(=S)=S>[CH3:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][C:10]=1[O:11][CH3:12])[C:5]([C:23]1[C:22]2[CH:24]=[CH:25][CH:26]=[CH:27][C:21]=2[O:20][C:19]=1[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)=[O:6]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
To a cooled, stirred solution of 10.8 g. (0.058 mol.) of 3-methyl-4-methoxybenzoic acid chloride and 9.6 g. (0.054 mol.) of 2-phenylbenzofuran in 40 ml. of carbon disulfide is added dropwise over a 20 minute interval 28.2 g. (0.108 mol.) of stannic chloride. After addition, the reaction mixture is warmed to ambient temperature and stirred for 2 hours. The mixture is then poured onto 100 ml. of ice-water and stirred for 1 hour. The solvent is removed, and the product extracted into chloroform and the extracts are washed with water, dried (Na2SO4) and concentrated under reduced pressure to give 3-(3-methyl-4-methoxybenzoyl)-2-phenylbenzofuran.