Azetidine → (S)-ethyl 2-(2-(azetidin-1-yl)-5-methyl-7-(trifluoromethylsulfonyloxy)benzo[d]thiazol-6-yl)-2-tert-butoxyacetate

Reaction equation

Br[C:2]1[S:3][C:4]2[C:10]([O:11][S:12]([C:15]([F:18])([F:17])[F:16])(=[O:14])=[O:13])=[C:9]([C@H:19]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])[C:20]([O:22][CH2:23][CH3:24])=[O:21])[C:8]([CH3:30])=[CH:7][C:5]=2[N:6]=1.[NH:31]1[CH2:34][CH2:33][CH2:32]1.[NH4+].[Cl-]>C1COCC1>[N:31]1([C:2]2[S:3][C:4]3[C:10]([O:11][S:12]([C:15]([F:17])([F:16])[F:18])(=[O:14])=[O:13])=[C:9]([C@H:19]([O:25][C:26]([CH3:28])([CH3:29])[CH3:27])[C:20]([O:22][CH2:23][CH3:24])=[O:21])[C:8]([CH3:30])=[CH:7][C:5]=3[N:6]=2)[CH2:34][CH2:33][CH2:32]1