Reaction #992719

Reaction equation

2,7-bis(acetylamino)dibenzodioxin

3-iodopyridine

potassium carbonate

quinoline

→

crude product

2,7-bis(N-3-pyridylacetylamino)dibenzodioxin

Solvents

water

methylene chloride

Conditions

Workup

1. 1
   Temperaturewas heated
2. 2
   TemperatureThe reaction mixture was cooled to room temperature
3. 3
   Othera precipitate was separated by filtration
4. 4
   workup.ADDITIONTo the filtrate was added 100 ml of water
5. 5
   Otherthe organic layer was separated from the aqueous layer
6. 6
   ConcentrationThe organic layer was concentrated
7. 7
   Otherdried under reduced pressure

Procedure

A slurry prepared from 7.0 g (0.023 mole) of 2,7-bis(acetylamino)dibenzodioxin, 12.0 g (0.059 mole) of 3-iodopyridine, 9.8 g (0.051 mole) of copper (I) iodide, 12.9 g (0.093 mole) of potassium carbonate, and 230 ml of quinoline was heated with stirring at 170° C. for 48 hours. The reaction mixture was cooled to room temperature, 100 ml of methylene chloride and 100 ml of water were added, and a precipitate was separated by filtration. To the filtrate was added 100 ml of water and the organic layer was separated from the aqueous layer. The organic layer was concentrated and dried under reduced pressure to give 23.5 g of a crude product which was used without purification in the next reaction.

Source