Trifluoroacetic acid → 2-(5-(N-(2-morpholinoethyl)methylsulfonamido)-2,3-dioxoindolin-1-yl)acetic acid 2,2,2-trifluoroacetic acid salt

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Reaktionsgleichung

CC1(C)CO[C:5]2([C:13]3[C:8](=[CH:9][CH:10]=[C:11]([N:14]([CH2:19][CH2:20][N:21]4[CH2:26][CH2:25][O:24][CH2:23][CH2:22]4)[S:15]([CH3:18])(=[O:17])=[O:16])[CH:12]=3)[N:7]([CH2:27][C:28]([O:30]C)=[O:29])[C:6]2=[O:32])[O:4]C1.[C:36]([OH:42])([C:38]([F:41])([F:40])[F:39])=[O:37]>C(OCC)(=O)C.CCCCCC>[F:39][C:38]([F:41])([F:40])[C:36]([OH:42])=[O:37].[O:24]1[CH2:25][CH2:26][N:21]([CH2:20][CH2:19][N:14]([C:11]2[CH:12]=[C:13]3[C:8](=[CH:9][CH:10]=2)[N:7]([CH2:27][C:28]([OH:30])=[O:29])[C:6](=[O:32])[C:5]3=[O:4])[S:15]([CH3:18])(=[O:17])=[O:16])[CH2:22][CH2:23]1

Komponenten

Reaktionsbedingungen

Temperatur: 80 °C

Versuchsvorschrift

A mixture of methyl 2-(5,5-dimethyl-5′-(N-(2-morpholinoethyl)-methylsulfonamido)-2′-oxospiro[[1,3]dioxane-2,3′-indoline]-1′-yl)acetate (0.450 g, 0.880 mmol) and TFA (0.678 ml, 8.80 mmol) in dioxane/water 1/1 (15 ml) was heated at 80° C. for 24 hours. Additional TFA (1.356 ml, 17.6 mmol) was added over 5 days with stirring at the same temperature. The volatiles were removed under vacuum, and the crude was triturated with diethyl ether. The insoluble was collected by filtration and dried under vacuum affording 2-(5-(N-(2-morpholinoethyl)methylsulfonamido)-2,3-dioxoindolin-1-yl)acetic acid 2,2,2-trifluoroacetic acid salt (0.319 g, 0.607 mmol, 69.0% yield, MS/ESI+ 412.0 [MH]+).

Aufarbeitung

customThe volatiles were removed under vacuum
customthe crude was triturated with diethyl ether
filtrationThe insoluble was collected by filtration
customdried under vacuum

Quellen und Nachweise

ORD-Eintrag: ord-ac0f2e3ee7d04568840c391e2106b5d1
Quelldatensatz: uspto-grants-2015_05
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US09024027B2

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