2,3-Dichloropyridine → 6-(3-Chloropyridin-2-yl)-N-(4-fluorophenyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine

HRID 19627

Reaktionsgleichung

[F:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[C:10]3[CH2:18][NH:17][CH2:16][CH2:15][C:11]=3[N:12]=[CH:13][N:14]=2)=[CH:4][CH:3]=1.Cl[C:20]1[C:25]([Cl:26])=[CH:24][CH:23]=[CH:22][N:21]=1.C(N(CC)C(C)C)(C)C>O1CCOCC1.CN(C)C(=O)C>[Cl:26][C:25]1[C:20]([N:17]2[CH2:16][CH2:15][C:11]3[N:12]=[CH:13][N:14]=[C:9]([NH:8][C:5]4[CH:6]=[CH:7][C:2]([F:1])=[CH:3][CH:4]=4)[C:10]=3[CH2:18]2)=[N:21][CH:22]=[CH:23][CH:24]=1

Komponenten

Reaktionsbedingungen

Temperatur: 150 °C

Versuchsvorschrift

N-(4-Fluorophenyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine (0.47 g, 1.92 mmol) was dissolved in a mixture of dioxane/N,N-dimethylacetamide (4:1) (3 mL). To the mixture was added 2,3-dichloropyridine (420 mg, 2.86 mmol) and N,N-diisopropylethylamine (0.38 mL, 2.2 mmol). The mixture was heated at 150° C. in a Personal Chemistry microwave for 16 h. The solvents were removed under vacuum and the residue was dissolved in ethyl acetate and washed with sat. NaHCO3 and brine. The organic layer was dried over Na2SO4, filtered and evaporated to give a brown residue. The residue was purified by silica gel chromatography using a gradient of ethyl acetate:hexane (0-100%) to give the desired compound as an off-white powder (200 mg, 30%).

Aufarbeitung

customThe solvents were removed under vacuum
dissolutionthe residue was dissolved in ethyl acetate
washwashed with sat. NaHCO3 and brine
dry with materialThe organic layer was dried over Na2SO4
filtrationfiltered
customevaporated
customto give a brown residue
customThe residue was purified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag: ord-60bf7b0411ce46dcb33b6cf568ecec10
Quelldatensatz: uspto-grants-2010_06
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07745451B2

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