Reaktion #1278070

Reaktionsgleichung

water

AlMe3

pyrrolidine

1,3-Dimethyl 5-aminobenzene-1,3-dicarboxylate

→

expected compound

3,5-Bis[(pyrrolidin-1-yl)carbonyl]aniline

Lösungsmittel

DCM

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturthe reaction mixture was refluxed for 38 h
2. 2
   workup.ADDITIONThe mixture was then poured in ice
3. 3
   Filtrationfiltered
4. 4
   ExtraktionThe aqueous filtrate was extracted with CHCl3
5. 5
   TrocknenThe combined organic layers were dried over MgSO4
6. 6
   Filtrationfiltered
7. 7
   Sonstigeevaporated

Vorschrift

A solution of AlMe3 (2M in toluene, 19.5 mL, 2 eq) was added dropwise to a solution of pyrrolidine (3.25 mL, 2 eq) in 50 mL of anhydrous DCM at 0° C. The reaction mixture was allowed to warm up to room temperature and stirred for 1 h. 1,3-Dimethyl 5-aminobenzene-1,3-dicarboxylate (4.10 g, 19.5 mmol) was added and the reaction mixture was refluxed for 38 h. The mixture was then poured in ice cooled water and filtered. The aqueous filtrate was extracted with CHCl3. The combined organic layers were dried over MgSO4, filtered and evaporated to give 3.5 g of expected compound which was used in the next step without further purification.

Quelle