Quinoxaline-2-carbaldehyde → HCID 11998277, Verbindung

HRID 491430

Reaktionsgleichung

Reaktionsgleichung von HRID 491430
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[S:12][C:13]3[C:19]([N:20]4[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]4)=[CH:18][CH:17]=[CH:16][C:14]=3[N:15]=2)=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[N:26]1[C:35]2[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=2)[N:29]=[CH:28][C:27]=1[CH:36]=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl.C(O)(=O)C>[C:1]([C:5]1[CH:6]=[CH:7][C:8]([C:11]2[S:12][C:13]3[C:19]([N:20]4[CH2:25][CH2:24][N:23]([CH2:36][C:27]5[CH:28]=[N:29][C:30]6[C:35](=[CH:34][CH:33]=[CH:32][CH:31]=6)[N:26]=5)[CH2:22][CH2:21]4)=[CH:18][CH:17]=[CH:16][C:14]=3[N:15]=2)=[CH:9][CH:10]=1)([CH3:4])([CH3:2])[CH3:3]

Komponenten

6

Edukt 3

HCID 594088Quinoxaline-2-carbaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 57678297HCID 57678297, Verbindung

Produkt 1

HCID 11998277HCID 11998277, VerbindungAusbeute 55 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 176Acetic AcidKatalysatorHCID 111,2-DichloroethaneLösungsmittel

Versuchsvorschrift

The piperazine template (0.075 g, 0.213 mmol) of Example 24 was dissolved in 1,2-dichloroethane (3 mL) and treated with quinoxaline-2-carbaldehyde (0.044 g, 0.277 mmol) and glacial acetic acid (2 drops). Sodium triacetoxyborohydride (0.090 g, 0.426 mmol) was added, and the mixture was stirred at room temperature until the reaction was complete by LCMS analysis. The solvent was removed under reduced pressure, and the resulting residue was purified by RP-HPLC to yield the free base (0.0578 g, 55% yield). MS (ESI) m/z 494.

Aufarbeitung

  1. customThe solvent was removed under reduced pressure
  2. customthe resulting residue was purified by RP-HPLC

Quellen und Nachweise

ORD-Eintrag
ord-e55cb59139414209ac3587dd58e64a21
Quelldatensatz
uspto-grants-2009_05
Patentnummer
US07531542B2

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