Triphenyl phosphite → Methyl 4-methyl-2-oxo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine-7-carboxylate

HRID 69642

Reaktionsgleichung

Reaktionsgleichung von HRID 69642
C[O:2][C:3](=O)[CH2:4][N:5]([CH3:19])[C:6]1[C:15]([N+:16]([O-])=O)=[CH:14][C:9]([C:10]([O:12][CH3:13])=[O:11])=[CH:8][N:7]=1.P(OC1C=CC=CC=1)(OC1C=CC=CC=1)OC1C=CC=CC=1.[H][H]>ClCCl.[NH4+].[O-][V](=O)=O.[Pt]>[CH3:19][N:5]1[CH2:4][C:3](=[O:2])[NH:16][C:15]2[CH:14]=[C:9]([C:10]([O:12][CH3:13])=[O:11])[CH:8]=[N:7][C:6]1=2

Komponenten

7

Versuchsvorschrift

Methyl 6-((2-methoxy-2-oxoethyl)(methyl)amino)-5-nitronicotinate (2.7 g, 9.53 mmol) was dissolved in dichloromethane (10 mL). To the yellow solution was added ammonium metavanadate (30.0 mg, 0.256 mmol), triphenyl phosphite (aprox 30 ul, 0.097 mmol), and Pt/C (300 mg, 5% w/w). The reaction mixture was pressurized with hydrogen gas (110 psi) and stirred at room temperature for 16 h. The reaction was then depressurized and diluted with dichloromethane (100 mL) which was then refluxed for 30 min. The hot solution was filtered through a pad of celite and washed with hot dichloromethane (3×20 mL). The filtrate was concentrated in vacuo to yield the title compound (1.45 g, 68%) as a white solid. [M+H] calc'd for C10H11N3O3, 222; found, 222.

Aufarbeitung

  1. temperaturewas then refluxed for 30 min
  2. filtrationThe hot solution was filtered through a pad of celite
  3. washwashed with hot dichloromethane (3×20 mL)
  4. concentrationThe filtrate was concentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-aeca5177558b4cc7ad06a462e8e935d4
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08822470B2

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