Reaktion #578672

Reaktionsgleichung

5-(5-Iodo-2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine

diisopropylamine

Ethynylcyclopropane

→

5-(5-cyclopropylethynyl-2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine

Ausbeute 89.4%

Lösungsmittel

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigecap flask
2. 2
   Sonstigethe flask was sealed
3. 3
   TemperaturThe reaction mixture was cooled
4. 4
   Extraktionextracted into dichloromethane
5. 5
   WaschenThe combined organic layers were washed with brine
6. 6
   Trocknendried over Na2SO4
7. 7
   Filtrationfiltered
8. 8
   Einengenconcentrated under reduced pressure
9. 9
   SonstigeThe residue was chromatographed on 100 g of flash silica (2%-3% MeOH/CH2Cl2)

Vorschrift

5-(5-Iodo-2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine (873 g, 2 mmol), bis(triphenylphosphine)palladium dichloride (140 mg, 0.2 mmol), and CuI (19 mg, 0.1 mmol) were added to 15 mL of degassed diisopropylamine under nitrogen in a screw cap flask. Ethynylcyclopropane (0.25 mL, 3 mmol) was added, and the flask was sealed and heated to 70° C. for 18 hours. The reaction mixture was cooled, poured into water, and extracted into dichloromethane. The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was chromatographed on 100 g of flash silica (2%-3% MeOH/CH2Cl2) to give 605 mg of 5-(5-cyclopropylethynyl-2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine. MP 225.5-226.8° C.; MS (M+H)=339.

Quelle