p-Toluenesulfonic acid → 1-(2,4-Dichlorophenyl)-3-methyl-5-piperidin-1-yl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridine-4-one

HRID 254337

Reaktionsgleichung

Reaktionsgleichung von HRID 254337
[N:1]1([N:9]2[CH2:14][CH2:13][CH2:12][CH2:11][CH2:10]2)[CH2:6][CH2:5][C:4](=O)[CH2:3][C:2]1=[O:8].[Cl:15][C:16]1[CH:21]=[C:20]([Cl:22])[CH:19]=[CH:18][C:17]=1[NH:23][CH2:24][C:25](=O)[CH3:26].CC1C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[Cl:15][C:16]1[CH:21]=[C:20]([Cl:22])[CH:19]=[CH:18][C:17]=1[N:23]1[C:4]2[CH2:5][CH2:6][N:1]([N:9]3[CH2:14][CH2:13][CH2:12][CH2:11][CH2:10]3)[C:2](=[O:8])[C:3]=2[C:25]([CH3:26])=[CH:24]1

Komponenten

5

Edukt 3

HCID 6101p-Toluenesulfonic acidHCID 22038474[1,1']Bipiperidinyl-2,4-dioneHCID 220384831-(2,4-Dichloroanilino)propan-2-one

Produkt 1

HCID 179552401-(2,4-Dichlorophenyl)-3-methyl-5-piperidin-1-yl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridine-4-oneAusbeute 25 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel2×

Versuchsvorschrift

To a solution of [1,1′]bipiperidinyl-2,4-dione (520 mg, 2.65 mmol) from Example 1 step 4 in dry toluene (25 ml) at room temperature were added 1-(2,4-dichlorophenylamino)-propan-2-one (576 mg, 2.64 mmol) from Step 1 above followed by a catalytic amount of p-TSA. The reaction mixture was boiled under reflux with a Dean-Stark trap, and 10 ml toluene was collected in the trap. One molar equivalent of p-TSA (250 mg) was added and the reaction mixture was boiled under reflux for 5.5 hours. After cooling to room temperature, the reaction mixture was evaporated and purified by flash chromatography (heptane:EtOAc gradient) to give 250 mg (25%) of the title compound as a brown solid. A parallel experiment with 1.51 g 1-(2,4-dichlorophenylamino)propan-2-one afforded 0.68 g (26%) of the product.

Aufarbeitung

  1. customwas collected in the trap
  2. additionOne molar equivalent of p-TSA (250 mg) was added
  3. temperatureunder reflux for 5.5 hours
  4. customthe reaction mixture was evaporated
  5. custompurified by flash chromatography (heptane:EtOAc gradient)

Quellen und Nachweise

ORD-Eintrag
ord-d363864448134b18a801cc69d3176727
Quelldatensatz
uspto-grants-2011_01
Patentnummer
US07875626B2

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