Reaktion #55243

Reaktionsgleichung

N-(2-chloroethyl)morpholine

Salicylaldehyde

sodium hydride

toluene

→

product

2-[2-(4-Morpholinyl)ethoxy]benzaldehyde

Lösungsmittel

dimethylformamide

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe mixture is heated at 105°-110° C. for 4 hours
2. 2
   Temperaturcooled
3. 3
   ExtraktionThe product is extracted three times with ether
4. 4
   Sonstigedried
5. 5
   Einengenconcentrated on a rotary evaporator
6. 6
   workup.DISTILLATIONthe residue distilled

Vorschrift

Salicylaldehyde (34 g) is treated first with 13.4 g of 50% sodium hydride in 220 ml of dimethylformamide and then with 185 ml of a 2 N toluene solution of N-(2-chloroethyl)morpholine. The mixture is heated at 105°-110° C. for 4 hours, cooled and poured into 300 ml of water. The product is extracted three times with ether. The extracts are combined, dried, concentrated on a rotary evaporator and the residue distilled to give 56.6 g of product as an oil, boiling point 145°-150° C. at 0.05-0.1 mm of Hg.

Quelle