Acetonitrile → tert-butyl 4-(4-(4-(ethoxycarbonyl)-2-(1H-indol-4-yl)oxazol-5-yl)phenyl)piperazine-1-carboxylate

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Reaktionsgleichung

I[C:2]1[O:3][C:4]([C:12]2[CH:17]=[CH:16][C:15](OC)=[CH:14][CH:13]=2)=[C:5]([C:7]([O:9][CH2:10][CH3:11])=[O:8])[N:6]=1.[NH:20]1[C:28]2[CH:27]=[CH:26][CH:25]=[C:24](B(O)O)[C:23]=2[CH:22]=[CH:21]1.[C:32](=[O:35])([O-])[O-:33].[Na+].[Na+].[C:38](#[N:40])[CH3:39]>C(Cl)Cl.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH2:10]([O:9][C:7]([C:5]1[N:6]=[C:2]([C:24]2[CH:25]=[CH:26][CH:27]=[C:28]3[C:23]=2[CH:22]=[CH:21][NH:20]3)[O:3][C:4]=1[C:12]1[CH:13]=[CH:14][C:15]([N:40]2[CH2:7][CH2:5][N:6]([C:32]([O:33][C:12]([CH3:17])([CH3:13])[CH3:4])=[O:35])[CH2:39][CH2:38]2)=[CH:16][CH:17]=1)=[O:8])[CH3:11]

Komponenten

Reaktionsbedingungen

Temperatur: 150 °C

Versuchsvorschrift

A mixture of ethyl 2-iodo-5-(4-methoxyphenyl)oxazole-4-carboxylate (0.080 g, 0.15 mmol), indole-4-boronic acid (0.048 g, 0.30 mmol), Pd(dppf)2Cl2 (0.006 g, 0.007 mmol) and 1M aq. sodium carbonate (0.31 ml, 0.31 mmol) in acetonitrile (2.5 ml) was heated in the microwave at 150° C. for 15 minutes. The reaction mixture was diluted with DCM and washed with 1M NaOH. The organic phase was passed through a MP-SH cartridge, dried over MgSO4 and the solvent removed in vacuo to afford tert-butyl 4-(4-(4-(ethoxycarbonyl)-2-(1H-indol-4-yl)oxazol-5-yl)phenyl)piperazine-1-carboxylate which was used without further purification. LCMS (1) Rt: 2.61 min; m/z (ES+) 517.

Aufarbeitung

washwashed with 1M NaOH
dry with materialdried over MgSO4
customthe solvent removed in vacuo

Quellen und Nachweise

ORD-Eintrag: ord-3894aa3daf834437b98af9e59faefc13
Quelldatensatz: uspto-grants-2013_02
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08378095B2

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