Chloroacetyl isocyanate → 2-[4-(2,4-dioxo-imidazolidin-1-yl)phenyl]-6-ethoxy-1-ethyl-1H-indole-3-carbonitrile

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Reaktionsgleichung

[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]([CH2:22][CH3:23])[C:10]3[C:15]([C:16]=2[C:17]#[N:18])=[CH:14][CH:13]=[C:12]([O:19][CH2:20][CH3:21])[CH:11]=3)=[CH:4][CH:3]=1.Cl[CH2:25][C:26]([N:28]=[C:29]=[O:30])=[O:27].C1CCN2C(=NCCC2)CC1>O1CCOCC1>[O:30]=[C:29]1[NH:28][C:26](=[O:27])[CH2:25][N:1]1[C:2]1[CH:3]=[CH:4][C:5]([C:8]2[N:9]([CH2:22][CH3:23])[C:10]3[C:15]([C:16]=2[C:17]#[N:18])=[CH:14][CH:13]=[C:12]([O:19][CH2:20][CH3:21])[CH:11]=3)=[CH:6][CH:7]=1

Komponenten

Reaktionsbedingungen

Temperatur: 60 °C

Versuchsvorschrift

A solution of 2-(4-aminophenyl)-6-ethoxy-1-ethyl-1H-indole-3-carbonitrile (319 mg, 1.04 mmol) in 1,4-dioxane (3 mL) is treated with chloroacetyl isocyanate (0.10 mL, 1.17 mmol), and the resulting solution is warmed to 60° C. overnight. The solution is cooled, and DBU (0.20 mL, 1.31 mmol) is added. This mixture is stirred at ambient temperature overnight, and then is partitioned between water and ethyl acetate (50 mL each). The organic layer is washed with saturated brine, and then dried over anhydrous magnesium sulfate, filtered and evaporated. The residual material is triturated with ether, and the resulting solid is collected by filtration and dried under high vacuum to afford the title product (319 mg, 0.821 mmol, 79%).

Aufarbeitung

temperatureThe solution is cooled
customis partitioned between water and ethyl acetate (50 mL each)
washThe organic layer is washed with saturated brine
dry with materialdried over anhydrous magnesium sulfate
filtrationfiltered
customevaporated
customThe residual material is triturated with ether
filtrationthe resulting solid is collected by filtration
customdried under high vacuum

Quellen und Nachweise

ORD-Eintrag: ord-06c8c7b679964b6e88f27d690baa4447
Quelldatensatz: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07781478B2

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