Nitrogen oxide (N2O4) → 3-(4'-Bromophenyl)-2-nitronaphtho-[1,2-b]furan
反応式
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9]3[CH:20]=[CH:19][C:18]4[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=4)[C:10]=3[O:11][CH:12]=2)=[CH:4][CH:3]=1.[N+:21]([O-:26])([N+]([O-])=O)=[O:22]>ClCCl>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[C:9]3[CH:20]=[CH:19][C:18]4[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=4)[C:10]=3[O:11][C:12]=2[N+:21]([O-:26])=[O:22])=[CH:6][CH:7]=1参加物
4
実験手順
A solution of 2 g. of the product of step B in 50 ml. of dichloromethane is treated with 2.0 g. of dinitrogen tetraoxide, and the mixture is stirred at about 20° C. for about 18 hours. The mixture is evaporated, and the residue obtained is recrystallized from aqueous ethanol to provide yellow crystals of 3-(4'-bromophenyl)-2-nitronaphtho-[1,2-b]furan, m.p. 230°-233° C.