Sodium hydride → 1-benzhydryl-6-chloro-1H-indole-2-carbaldehyde

反応式

[Cl:1][C:2]1[CH:10]=[C:9]2[C:5]([CH:6]=[C:7]([CH:11]=[O:12])[NH:8]2)=[CH:4][CH:3]=1.[H-].[Na+].[CH:15](Br)([C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1>CN(C=O)C>[CH:15]([N:8]1[C:9]2[C:5](=[CH:4][CH:3]=[C:2]([Cl:1])[CH:10]=2)[CH:6]=[C:7]1[CH:11]=[O:12])([C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1

参加物

実験手順

To 6-chloro-1H-indole-2-carbaldehyde (1 equiv.) in DMF at 0° C. was added NaH (1.25 equiv.) portionwise followed by benzhydryl bromide (1.46 equiv.) and Bu4Nl (0.05 equiv.). The mixture was stirred at rt for 42 h before quenching with cold 0.4N HCl at 0° C. After neutralization, the aqueous layer was extracted with ether and the organic layer was washed with cold H2O and dried. Flash chromatography on silica gel gave 1-benzhydryl-6-chloro-1H-indole-2-carbaldehyde in 40% yield.