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Potassium Carbonate → (S)-3-{4-[2-(4-Cyano-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-6-ylmethoxy]-phenyl}-hex-4-ynoic acid ethyl ester

HRID 2272837
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2272837
Br[C:2]1[N:28]=[C:5]2[CH:6]=[CH:7][C:8]([CH2:10][O:11][C:12]3[CH:17]=[CH:16][C:15]([C@@H:18]([C:25]#[C:26][CH3:27])[CH2:19][C:20]([O:22][CH2:23][CH3:24])=[O:21])=[CH:14][CH:13]=3)=[CH:9][N:4]2[N:3]=1.CC1(C)C(C)(C)OB([C:37]2[CH:44]=[CH:43][C:40]([C:41]#[N:42])=[CH:39][CH:38]=2)O1.C([O-])([O-])=O.[K+].[K+]>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:23]([O:22][C:20](=[O:21])[CH2:19][C@@H:18]([C:15]1[CH:16]=[CH:17][C:12]([O:11][CH2:10][C:8]2[CH:7]=[CH:6][C:5]3[N:4]([N:3]=[C:2]([C:37]4[CH:44]=[CH:43][C:40]([C:41]#[N:42])=[CH:39][CH:38]=4)[N:28]=3)[CH:9]=2)=[CH:13][CH:14]=1)[C:25]#[C:26][CH3:27])[CH3:24]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 3

HCID 11430Potassium CarbonateHCID 27346254-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrileHCID 118151365Ethyl (3S)-3-[4-[(2-bromo-[1,2,4]triazolo[1,5-a]pyridin-6-yl)methoxy]phenyl]hex-4-ynoate

Produkt 1

HCID 118130002(S)-3-{4-[2-(4-Cyano-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-6-ylmethoxy]-phenyl}-hex-4-ynoic acid ethyl esterAusbeute 73,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

To a stirred solution of ethyl (3S)-3-[4-[(2-bromo-[1,2,4]triazolo[1,5-a]pyridin-6-yl)methoxy]phenyl]hex-4-ynoate (0.25 g, 0.57 mmol) and 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzonitrile (0.14 g, 0.5 mmol) in dioxane (115 mL) is added K2CO3 (0.15 g, 1.134 mmol). The mixture is purged with argon for 30 minutes, Pd(PPh3)4 (0.032 g, 0.027 mmol) is added and the mixture is heated at 100° C. for 5 hours. The reaction mixture is cooled to room temperature, filtered through diatomaceous earth. The filtrate is evaporated under reduced pressure and concentrated to dryness. The crude material is purified by silica gel chromatography (combiflash) eluting with 30% EtOAc/hexane to give the title compound as a brown liquid (0.170 g, 68.75%). LCMS m/z 464 (M+H).

Aufarbeitung

  1. customThe mixture is purged with argon for 30 minutes
  2. temperatureThe reaction mixture is cooled to room temperature
  3. filtrationfiltered through diatomaceous earth
  4. customThe filtrate is evaporated under reduced pressure
  5. concentrationconcentrated to dryness
  6. customThe crude material is purified by silica gel chromatography (combiflash)
  7. washeluting with 30% EtOAc/hexane

Quellen und Nachweise

ORD-Eintrag
ord-0418d728dc114017b4a0f4d0e2cec576
Quelldatensatz
uspto-grants-2015_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09120793B2

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