Cesium carbonate → 6-(2-Aminophenyl)-2-(4-phenoxyphenyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile

HRID 64373

Reaktionsgleichung

Br[C:2]1[CH:3]=[N:4][C:5]2[N:6]([N:8]=[C:9]([C:13]3[CH:18]=[CH:17][C:16]([O:19][C:20]4[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=4)=[CH:15][CH:14]=3)[C:10]=2[C:11]#[N:12])[CH:7]=1.[NH2:26][C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=1B(O)O.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.O.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>[NH2:26][C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=1[C:2]1[CH:3]=[N:4][C:5]2[N:6]([N:8]=[C:9]([C:13]3[CH:18]=[CH:17][C:16]([O:19][C:20]4[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=4)=[CH:15][CH:14]=3)[C:10]=2[C:11]#[N:12])[CH:7]=1

Komponenten

Reaktionsbedingungen

Temperatur: 80 °C

Versuchsvorschrift

A mixture of 6-bromo-2-(4-phenoxyphenyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (500 mg, 1.28 mmol), 2-aminophenylboronic acid (175 mg, 1.28 mmol), Cs2CO3 (623 mg, 1.92 mmol) and Pd(PPh3)4 (74 mg, 0.06 mmol) in 1,4-dioxane (30 mL) and water (1.0 mL) was heated to 80° C. for 16 hr under N2. The mixture was filtered and the filtrate was concentrated and purified by chromatography column on silica gel using 50% of EA in PE as eluant to give the crude product (320 mg, 59.1%) as a yellow solid. MS (ESI, m/e) [M+1]+ 403.9.

Aufarbeitung

filtrationThe mixture was filtered
concentrationthe filtrate was concentrated
custompurified by chromatography column on silica gel using 50% of EA in PE as eluant

Quellen und Nachweise

ORD-Eintrag: ord-b071d19cd2a245879bc88bf8db7126a2
Quelldatensatz: uspto-grants-2016_09
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US09447106B2

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