Allyl bromide → 9-(8-Allyl-8-aza-bicyclo[3.2.1] oct-3-ylidene)-9H-xanthene-3-carboxylic acid diethylamide

To a sample of compound 10a (0.37 g, 0.95 mmol) in 6 mL acetonitrile was added potassium carbonate (0.53 g, 3.81 mmol) and allyl bromide (80 μL, 0.95 mmol). The mixture was stirred at room temperature for 20 h. The reaction was diluted with water and extracted with CH2Cl2. The combined organic extracts were dried over magnesium sulfate and concentrated. The product was purified by flash column chromatography on silica gel, eluting with 10% 0.5 M NH3 in methanol/CH2Cl2 to yield 0.11 g (0.25 mmol) of Compound 14a. The product was converted into its HCl salt using ethereal hydrogen chloride. MS m/z=429.0 (M+1); 1H NMR 300 MHz (CDCl3) δ 1.1-1.4 (m, 6H), 1.7 (m, 2H), 2.3 (m, 2H), 3.1 (m, 2H), 3.4 (m, 2H), 3.6 (m, 4H), 4.0 (m, 2H), 4.4 (m, 2H), 4.7 (m, 2H), 5.5-5.9 (m, 4H), 6.3 (m, 2H), 7.1-7.4 (m, 7H).

1. extractionextracted with CH2Cl2
2. dry with materialThe combined organic extracts were dried over magnesium sulfate
3. concentrationconcentrated
4. customThe product was purified by flash column chromatography on silica gel
5. washeluting with 10% 0.5 M NH3 in methanol/CH2Cl2

ORD-Eintrag

ord-1415c58e35294f45b002ffe994ebb1e5

Quelldatensatz

uspto-grants-2012_01

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08106207B2