Boron tribromide → (S)-N-(3-(4-Amino-6-((1-(5-methyl-4-oxo-3-phenyl-3,4-dihydropyrrolo[2,1-f][1,2,4]triazin-2-yl)ethyl)amino)pyrimidin-5-yl)phenyl)-4-hydroxybenzenesulfonamide

Reaction equation

[NH2:1][C:2]1[C:7]([C:8]2[CH:9]=[C:10]([NH:14][S:15]([C:18]3[CH:23]=[CH:22][C:21]([O:24]C)=[CH:20][CH:19]=3)(=[O:17])=[O:16])[CH:11]=[CH:12][CH:13]=2)=[C:6]([NH:26][C@H:27]([C:29]2[N:34]([C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)[C:33](=[O:41])[C:32]3=[C:42]([CH3:45])[CH:43]=[CH:44][N:31]3[N:30]=2)[CH3:28])[N:5]=[CH:4][N:3]=1.B(Br)(Br)Br>ClCCl>[NH2:1][C:2]1[C:7]([C:8]2[CH:9]=[C:10]([NH:14][S:15]([C:18]3[CH:19]=[CH:20][C:21]([OH:24])=[CH:22][CH:23]=3)(=[O:17])=[O:16])[CH:11]=[CH:12][CH:13]=2)=[C:6]([NH:26][C@H:27]([C:29]2[N:34]([C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)[C:33](=[O:41])[C:32]3=[C:42]([CH3:45])[CH:43]=[CH:44][N:31]3[N:30]=2)[CH3:28])[N:5]=[CH:4][N:3]=1