Dimethylformamide → methyl 4-[6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-3-yl]benzoate

HRID 1255868Notizen

Reaktionsgleichung

[CH3:1][O:2][C:3]([C:5]1[CH:10]=[CH:9][C:8](B(O)O)=[CH:7][CH:6]=1)=[O:4].Br[C:15]1[CH:16]=[N:17][N:18]2[CH:23]=[C:22]([C:24]3[CH:25]=[N:26][N:27]([CH3:29])[CH:28]=3)[CH:21]=[N:20][C:19]=12.CN(C=O)C.C([O-])([O-])=O.[Na+].[Na+]>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.O>[CH3:29][N:27]1[CH:28]=[C:24]([C:22]2[CH:21]=[N:20][C:19]3[N:18]([N:17]=[CH:16][C:15]=3[C:8]3[CH:9]=[CH:10][C:5]([C:3]([O:2][CH3:1])=[O:4])=[CH:6][CH:7]=3)[CH:23]=2)[CH:25]=[N:26]1

Komponenten

Reaktionsbedingungen

Temperatur: 85 °C

Versuchsvorschrift

[4-(Methoxycarbonyl)phenyl]boronic acid (0.5 g, 2.77 mmol) was added to 3-bromo-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidine (0.7 g, 2.52 mmol). DMF (12.5 mL) and 1M Na2CO3 (3.8 mL) were added. The mixture was evacuated and flushed with nitrogen under stirring, then Pd(Ph3P)4 (0.15 g, 0.13 mmol) was added in a counter flow of nitrogen. The reaction mixture was heated to 85° C. for 16 h, cooled, and poured into a 5-fold excess of water. The solids were filtered and dried to give crude methyl 4-[6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-3-yl]benzoate: LC/MS [M+H]=334.0.

Aufarbeitung

customThe mixture was evacuated
customflushed with nitrogen
temperaturecooled
filtrationThe solids were filtered
customdried

Quellen und Nachweise

ORD-Eintrag: ord-1aa04bca74764af8a6fd9ef71a254ecf
Quelldatensatz: uspto-grants-2013_06
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08461162B2

Notizen zur Reaktion

Wird geladen…