2,2-Dimethoxypropane → (3aR,4R,9bR)-benzyl 4-(methoxymethyl)-2,3,3a,4,5,9b-hexahydro-1H-pyrrolo[3,2-c]quinoline-1-carboxylate

HRID 592108

Reaktionsgleichung

Reaktionsgleichung von HRID 592108
[CH3:1][O:2][CH2:3][C:4](=[C:12]1[CH2:16][CH2:15][N:14]([C:17]([O:19][CH2:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[O:18])[C:13]1=O)[NH:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.N1C(=O)NC(=O)NC1=O.COC(OC)(C)C>CC(C)=O>[CH3:1][O:2][CH2:3][C@H:4]1[C@H:12]2[CH2:16][CH2:15][N:14]([C:17]([O:19][CH2:20][C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)=[O:18])[C@H:13]2[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[NH:5]1

Komponenten

5

Edukt 3

HCID 64952,2-DimethoxypropaneHCID 7956Cyanuric acidHCID 131734548Benzyl 3-(2-methoxy-1-(phenylamino)ethylidene)-2-oxopyrrolidine-1-carboxylate

Produkt 1

HCID 117841166(3aR,4R,9bR)-benzyl 4-(methoxymethyl)-2,3,3a,4,5,9b-hexahydro-1H-pyrrolo[3,2-c]quinoline-1-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180AcetoneLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

In a 120 mL stainless autoclave were charged benzyl 3-(2-methoxy-1-(phenylamino)ethylidene)-2-oxopyrrolidine-1-carboxylate (1.50 g) [mw. 366.41, 4.1 mmol], cyanuric acid (0.53 g) [mw. 129.07, 4.1 mmol] and RuBr2[(s,s)-ptbp-skewphos](pica) (42.4 mg) [mw. 1033.94, 0.041 mmol]synthesized in Reference Example 52, and the system was substituted with argon. To deaeration-treated dehydrated acetone (55 mL) was added 2,2-dimethoxypropane (1.5 mL) [mw. 104.15, d=0.85, 12.3 mmol, 3.0 eq.] and the mixture was added to the autoclave by argon pressure supply. Furthermore, 2,2-dimethoxypropane was rinsed with dehydrated acetone (5 mL), and added by argon pressure supply. Hydrogen was filled therein to 5 MPa, and the mixture was stirred at a reaction temperature of 60° C. for 46 hr. The reaction mixture was cooled to room temperature and depressurized. Quantification by high performance liquid chromatography confirmed that the starting material, benzyl 3-(2-methoxy-1-(phenylamino)ethylidene)-2-oxopyrrolidine-1-carboxylate, remained, the reaction intermediate, benzyl 3-(2-methoxy-1-(phenylamino)ethyl)-2-oxopyrrolidine-1-carboxylate, was not more than 1%, and the resultant product, (3aR,4R,9bR)-benzyl 4-(methoxymethyl)-2,3,3a,4,5,9b-hexahydro-1H-pyrrolo[3,2-c]quinoline-1-carboxylate, was also not more than 1%.

Aufarbeitung

  1. customsynthesized in Reference Example 52
  2. additionthe mixture was added to the autoclave by argon pressure supply
  3. washFurthermore, 2,2-dimethoxypropane was rinsed with dehydrated acetone (5 mL)
  4. additionadded by argon pressure supply
  5. additionHydrogen was filled
  6. temperatureThe reaction mixture was cooled to room temperature

Quellen und Nachweise

ORD-Eintrag
ord-060bc22bfcf24b07b4d1217efcda3c8d
Quelldatensatz
uspto-grants-2016_01
Patentnummer
US09238667B2

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