Sodium Bicarbonate → 1-(2-{4-[(2,3-Dihydro[1,4]dioxino[2,3-c]pyridin-7-ylmethyl)amino]piperidin-1-yl}ethyl)-7-fluoroquinoxalin-2(1H)-one

HRID 39966

Reaktionsgleichung

Reaktionsgleichung von HRID 39966
[NH2:1][CH:2]1[CH2:7][CH2:6][N:5]([CH2:8][CH2:9][N:10]2[C:19]3[C:14](=[CH:15][CH:16]=[C:17]([F:20])[CH:18]=3)[N:13]=[CH:12][C:11]2=[O:21])[CH2:4][CH2:3]1.[O:22]1[C:31]2[CH:30]=[C:29]([CH:32]=O)[N:28]=[CH:27][C:26]=2[O:25][CH2:24][CH2:23]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])O.[Na+]>C(O)(=O)C.C(Cl)(Cl)Cl>[O:22]1[C:31]2[CH:30]=[C:29]([CH2:32][NH:1][CH:2]3[CH2:3][CH2:4][N:5]([CH2:8][CH2:9][N:10]4[C:19]5[C:14](=[CH:15][CH:16]=[C:17]([F:20])[CH:18]=5)[N:13]=[CH:12][C:11]4=[O:21])[CH2:6][CH2:7]3)[N:28]=[CH:27][C:26]=2[O:25][CH2:24][CH2:23]1

Komponenten

7

Edukt 4

HCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 218736682,3-Dihydro[1,4]dioxino[2,3-c]pyridine-7-carbaldehydeHCID 593979071-(2-(4-aminopiperidin-1-yl)ethyl)-7-fluoroquinoxalin-2(1H)-one

Produkt 1

HCID 159824081-(2-{4-[(2,3-Dihydro[1,4]dioxino[2,3-c]pyridin-7-ylmethyl)amino]piperidin-1-yl}ethyl)-7-fluoroquinoxalin-2(1H)-oneAusbeute 62,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 176Acetic AcidLösungsmittelHCID 6212ChloroformLösungsmittel

Versuchsvorschrift

To 10 mL of a chloroform solution containing 327 mg of 1-(2-(4-aminopiperidin-1-yl)ethyl)-7-fluoroquinoxalin-2(1H)-one and 230 mg of 2,3-dihydro-1,4-dioxino[2,3-c]pyridine-7-carbaldehyde, 65 μL of acetic acid were added, and stirred at room temperature for 1 hour. To the reaction mixture, 364 mg of sodium triacetoxyborohydride was added, and stirred overnight. Aqueous saturated sodium hydrogen carbonate solution was added, the organic layer was separated. The organic layer was washed with aqueous saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure. The residue thus obtained was purified by silica gel column chromatography [Silica Gel; Fuji Silysia Chemical Ltd., Chromatorex-NH, eluent; chloroform], to give 311 mg of 1-(2-(4-((2,3-dihydro-1,4-dioxino[2,3-c]pyridin-7-yl)methylamino)piperidin-1-yl)ethyl)-7-fluoroquinoxalin-2(1H)-one as a pale yellow solid.

Aufarbeitung

  1. additionwere added
  2. stirringstirred overnight
  3. customthe organic layer was separated
  4. washThe organic layer was washed with aqueous saturated sodium chloride solution
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customthe solvent was removed under reduced pressure
  7. customThe residue thus obtained
  8. customwas purified by silica gel column chromatography [Silica Gel; Fuji Silysia Chemical Ltd., Chromatorex-NH, eluent; chloroform]

Quellen und Nachweise

ORD-Eintrag
ord-c941b7cca1e040789d708bc6cc7af85c
Quelldatensatz
uspto-grants-2013_09
Patentnummer
US08524738B2

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