Potassium Carbonate → {3-[2-(4-Methoxy-benzyl)-1,1-dioxo-1,2-dihydro-1lambda6-benzo[e][1,2,3]thiadiazin-4-yl]-5-fluoro-2-methyl-indol-1-yl}-acetic acid tert-butyl ester

HRID 1013237Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:10]=[CH:9][C:6]([CH2:7]Cl)=[CH:5][CH:4]=1.C([O-])([O-])=O.[K+].[K+].[F:17][C:18]1[CH:19]=[C:20]2[C:24](=[CH:25][CH:26]=1)[NH:23][C:22]([CH3:27])=[C:21]2[C:28]1[C:33]2[CH:34]=[CH:35][CH:36]=[CH:37][C:32]=2[S:31](=[O:39])(=[O:38])[NH:30][N:29]=1.Br[CH2:41][C:42]([O:44][C:45]([CH3:48])([CH3:47])[CH3:46])=[O:43]>CC#N.O.C(Cl)Cl>[C:45]([O:44][C:42](=[O:43])[CH2:41][N:23]1[C:24]2[C:20](=[CH:19][C:18]([F:17])=[CH:26][CH:25]=2)[C:21]([C:28]2[C:33]3[CH:34]=[CH:35][CH:36]=[CH:37][C:32]=3[S:31](=[O:38])(=[O:39])[N:30]([CH2:7][C:6]3[CH:9]=[CH:10][C:3]([O:2][CH3:1])=[CH:4][CH:5]=3)[N:29]=2)=[C:22]1[CH3:27])([CH3:48])([CH3:47])[CH3:46]

Participants

Conditions

Temperature: 80 °C

Procedure

4-Methoxybenzyl chloride (10 μL, 67 μmol) and K2CO3 (10 mg, 72 μmol) were added to a solution of 4-(5-fluoro-2-methyl-1H-indol-3-yl)-2H-benzo[e][1,2,3]thiadiazine 1,1-dioxide (20 mg, 61 μmol) in CH3CN (1 mL), and stirred overnight at 80° C. An additional amount of K2CO3 (10 mg, 72 μmol) and tert-butyl bromoacetate (14 μL, 92 μmol) was added, and the reaction mixture stirred an additional 2 h at 80° C. The reaction mixture was diluted with H2O and CH2Cl2, and filtered through an Extrelut column. The Extrelut column was washed with CH2Cl2, and the filtrate was concentrated to afford the sub-title compound, which was carried onto the next step without further purification or characterization.

Workup

stirringthe reaction mixture stirred an additional 2 h at 80° C
filtrationfiltered through an Extrelut column
washThe Extrelut column was washed with CH2Cl2
concentrationthe filtrate was concentrated

Sources & evidence

ORD record: ord-77f7d35fae544f2492e5e4517b0ab179
Source dataset: uspto-grants-2011_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07981912B2

Reaction notes

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