Reaktion #81917

Reaktionsgleichung

3-bromoquinoline

3-butyn-1-ol

→

oil

Ausbeute 136.9%

4-(3-Quinolinyl)-3-butyn-1-ol

Ausbeute 136.9%

Lösungsmittel

triethylamine

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeby bubbling in dry nitrogen for 15 minutes
2. 2
   SonstigeThe flask is flushed with nitrogen
3. 3
   Temperaturthe mixture is heated
4. 4
   Temperaturto reflux for 5 hours
5. 5
   workup.ADDITIONThe cooled mixture is diluted with dichloromethane
6. 6
   Waschenwashed with water
7. 7
   Trocknendried (sodium sulfate)
8. 8
   Einengenconcentrated

Vorschrift

A solution of 3-bromoquinoline (13.57 mL, 0.10 mol) and 3-butyn-1-ol (9.0 mL, 0.12 mol) in 40 mL of triethylamine and 75 mL of dichloromethane is degassed by bubbling in dry nitrogen for 15 minutes, and 0.7 g (0.001 mol) of bis(triphenylphosphine)palladium chloride and 0.013 g of cuprous iodide are added. The flask is flushed with nitrogen and the mixture is heated to reflux for 5 hours. The cooled mixture is diluted with dichloromethane and washed with water, dried (sodium sulfate), and concentrated to give 27 g of an oil. The oil is triturated with diethyl ether to give 18.2 g of the title compound as a tan solid; mp 95.7°-96.7° C.

Quelle