Reaction #433188
ord-b1fc6ac851624b46838b8df6ed3bd165
Reaction equation
Reactants
Reagents
Conditions
Workup
- 1TemperatureAfter warming to 100°
- 2workup.DISTILLATIONto distill off
- 3workup.ADDITIONA further 50 ml of toluene and 1 g of polyethylene glycol 1000 and 0.9 g of NaOH are added
- 4Temperaturethe mixture is heated
- 5Temperatureunder reflux
- 6TemperatureAfter cooling
- 7workup.ADDITIONthe reaction mixture is diluted
- 8Washthe solution is washed four times with water
- 9DryingThe organic solution is dried over Na2SO4
- 10Otherevaporated
- 11workup.DISSOLUTIONThe residue is dissolved in 50 ml of methanol
- 12Filtrationfiltered through 200 g of silica gel
- 13Washwashed with 500 ml of methanol
- 14OtherThe methanol solution is evaporated
Procedure
0.71 ml of diethylenetriamine and 0.9 g of NaOH, dissolved in 3 ml of water, are added to 10.6 g of the monochloro derivative from Example 70, dissolved in 50 ml of toluene. After warming to 100°, the solvent begins to distill off. A further 50 ml of toluene and 1 g of polyethylene glycol 1000 and 0.9 g of NaOH are added and the mixture is heated with stirring for 14 h under reflux. After cooling, the reaction mixture is diluted using 100 ml of ethyl acetate and the solution is washed four times with water. The organic solution is dried over Na2SO4 and evaporated. The residue is dissolved in 50 ml of methanol, filtered through 200 g of silica gel and washed with 500 ml of methanol. The methanol solution is evaporated, the residue being a nearly colorless resin.