Cesium carbonate → 3-{2-[2-((R)-1-Hydroxyethyl)benzoimidazol-1-yl]-9-methyl-6-morpholin-4-yl-9H-purin-8-ylmethylene}azetidine-1-carboxylic acid tert-butyl ester

HRID 1922851Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1922851
[C:1]([O:5][C:6]([N:8]1[CH2:11][C:10](=[CH:12][C:13]2[N:14]([CH3:29])[C:15]3[C:20]([N:21]=2)=[C:19]([N:22]2[CH2:27][CH2:26][O:25][CH2:24][CH2:23]2)[N:18]=[C:17](Cl)[N:16]=3)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[NH:30]1[C:34]2[CH:35]=[CH:36][CH:37]=[CH:38][C:33]=2[N:32]=[C:31]1[C@H:39]([OH:41])[CH3:40].CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C.C([O-])([O-])=O.[Cs+].[Cs+]>C1(C)C=CC=CC=1.[Pd].[Pd].C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1.C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1.C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1>[C:1]([O:5][C:6]([N:8]1[CH2:11][C:10](=[CH:12][C:13]2[N:14]([CH3:29])[C:15]3[C:20]([N:21]=2)=[C:19]([N:22]2[CH2:27][CH2:26][O:25][CH2:24][CH2:23]2)[N:18]=[C:17]([N:30]2[C:34]4[CH:35]=[CH:36][CH:37]=[CH:38][C:33]=4[N:32]=[C:31]2[C@H:39]([OH:41])[CH3:40])[N:16]=3)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Komponenten

7

Edukt 4

HCID 10796Cesium carbonateHCID 729393(1R)-1-(1H-1,3-benzodiazol-2-yl)ethan-1-olHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 59605709tert-butyl 3-((2-chloro-9-methyl-6-morpholino-9H-purin-8-yl)methylene)azetidine-1-carboxylate

Produkt 1

HCID 596059333-{2-[2-((R)-1-Hydroxyethyl)benzoimidazol-1-yl]-9-methyl-6-morpholin-4-yl-9H-purin-8-ylmethylene}azetidine-1-carboxylic acid tert-butyl esterAusbeute 72 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 9832798Tris(dibenzylideneacetone) dipalladiumKatalysatorHCID 1140TolueneLösungsmittel

Reaktionsbedingungen

Temperatur
140 °C

Versuchsvorschrift

A mixture of 3-(2-chloro-9-methyl-6-morpholin-4-yl-9H-purin-8-ylmethylene)azetidine-1-carboxylic acid tert-butyl ester (180 mg, 0.43 mmol), (R)-1-(1H-benzoimidazol-2-yl)ethanol (84 mg, 0.52 mmol), tris(dibenzylideneacetone) dipalladium (40 mg, 0.04 mmol), XPhos (82 mg, 0.17 mmol) and Cs2CO3 (279 mg, 0.86 mmol) in toluene (3 mL) was purged with argon then heated at 140° C. for 1 h in a microwave reactor. The reaction mixture was filtered through Celite®, washing with EtOAc and the filtrate concentrated in vacuo. The resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, 0-15%) affording the title compound (167 mg, 72%). LCMS (method A): RT 3.24 min [M+H]+ 547.4

Aufarbeitung

  1. customwas purged with argon
  2. filtrationThe reaction mixture was filtered through Celite®
  3. washwashing with EtOAc
  4. concentrationthe filtrate concentrated in vacuo
  5. customThe resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, 0-15%)

Quellen und Nachweise

ORD-Eintrag
ord-b6294768929e4185b7e6e5eb91c8a791
Quelldatensatz
uspto-grants-2012_05
Patentnummer
US08173650B2

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