Thionyl Chloride → 3-Chloro-3-(4-chlorophenyl)-2-benzofuran-1(3H)-one
Reaction equation
[Cl:1][C:2]1[CH:18]=[CH:17][C:5]([C:6]([C:8]2[CH:16]=[CH:15][CH:14]=[CH:13][C:9]=2[C:10]([OH:12])=[O:11])=O)=[CH:4][CH:3]=1.S(Cl)([Cl:21])=O>CN(C=O)C.C1COCC1>[Cl:21][C:6]1([C:5]2[CH:17]=[CH:18][C:2]([Cl:1])=[CH:3][CH:4]=2)[C:8]2[C:9](=[CH:13][CH:14]=[CH:15][CH:16]=2)[C:10](=[O:12])[O:11]1Participants
5
