Dichloromethane → HCID 59823054, Verbindung

HRID 1260433Notizen

Reaktionsgleichung

[Cl:1][C:2]1[C:11]2[C:10](=[O:12])[NH:9][CH:8]=[N:7][C:6]=2[N:5]([CH3:13])[C:4](=[O:14])[C:3]=1[CH3:15].C(=O)([O-])[O-].[Cs+].[Cs+].Cl[CH2:23][C@@H:24]1[CH2:28][O:27][C:26]([CH3:30])([CH3:29])[O:25]1.C(Cl)Cl>CN(C=O)C.[I-].[K+]>[Cl:1][C:2]1[C:11]2[C:10](=[O:12])[N:9]([CH2:23][C@@H:24]3[CH2:28][O:27][C:26]([CH3:30])([CH3:29])[O:25]3)[CH:8]=[N:7][C:6]=2[N:5]([CH3:13])[C:4](=[O:14])[C:3]=1[CH3:15]

Komponenten

Reaktionsbedingungen

Temperatur: 120 °C

Versuchsvorschrift

5-Chloro-6,8-dimethylpyrido[2,3-d]pyrimidine-4,7(3H,8H)-dione (8.3 g, 36.8 mmol, 1 eq, compound 8D), cesium carbonate (47.9 g, 147.5 mmol, 4e q) and potassium iodide (30 mg, cat) were stirred in anhydrous DMF (180 mL, 0.4 M) containing 4 Å molecular sieves (2.49 g) under N2. After 15 minutes (S)-4-(chloromethyl)-2,2-dimethyl-1,3-dioxolane (25.1 mL, 184 mmol, 5 eq) was added and the mixture stirred at 120° C. for 12 hours. DCM (150 mL) was added and the organic layer washed with water (150 mL) dried over magnesium sulfate and evaporated. The residue was purified by silica chromatography using 0-70% EtOAc/Hexane as eluent to give 4.8 g of product. [M+H] calc'd for C15H18ClN3O4, 340. found, 340.

Aufarbeitung

additioncontaining 4 Å molecular sieves (2.49 g) under N2
washthe organic layer washed with water (150 mL)
dry with materialdried over magnesium sulfate
customevaporated
customThe residue was purified by silica chromatography

Quellen und Nachweise

ORD-Eintrag: ord-81f4a0c1a18d455894813578b99ba437
Quelldatensatz: uspto-grants-2013_06
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08470837B2

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