Trimethylaluminum → HCID 57964894, Verbindung
Reaktionsgleichung
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]2[C:18]3=[N:19][C:20](Cl)=[N:21][C:22]([O:23][C:24]4[CH:29]=[CH:28][C:27]([S:30]([CH3:33])(=[O:32])=[O:31])=[CH:26][CH:25]=4)=[C:17]3[CH:16]=[N:15]2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:35][Al](C)C>O1CCCC1>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]2[C:18]3=[N:19][C:20]([CH3:35])=[N:21][C:22]([O:23][C:24]4[CH:29]=[CH:28][C:27]([S:30]([CH3:33])(=[O:32])=[O:31])=[CH:26][CH:25]=4)=[C:17]3[CH:16]=[N:15]2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A mixture of 4-[6-chloro-4-(4-methanesulfonyl-phenoxy)-pyrazolo[3,4-d]pyrimidin-1-yl]-piperidine-1-carboxylic acid tert-butyl ester (Example 172; 230 mg, 0.45 mmol), trimethylaluminum (2 M in toluene; 0.5 mL, 1 mmol), and tetrakis(triphenyl-phosphine)palladium(0) (58 mg, 0.05 mmol) in tetrahydrofuran (5 mL) was heated at reflux for 2 h. The solvent was evaporated and the residue was purified by column chromatography to give 4-[4-(4-methanesulfonyl-phenoxy)-6-methyl-pyrazolo[3,4-d]pyrimidin-1-yl]-piperidine-1-carboxylic acid tert-butyl ester (93 mg, 42%) as a white foam/solid.