Sodium Carbonate → 3-(6-Morpholinopyridin-3-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazole-6-carbaldehyde

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A mixture 3-iodo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazole-6-carbaldehyde (25 mg, 0.62 mmol), 4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)morpholine (22 mg, 0.75 mmol), PdCl2(PPh3)2 (4 mg, 0.006 mmol) and 2M Na2CO3 (0.31 mL, 0.62 mmol) in DME/H2O/EtOH (2.8 mL/0.8 mL/0.4 mL) was sealed and heated with stirring under microwave irradiation at 125° C. for 4 h. Solvent was removed and the crude product was purified by silica gel chromatography (95:5 CH2Cl2/MeOH) to yield a bright yellow foam (266 mg, 97%). 1H NMR (400 MHz, CD3OD) δ 10.02 (s, 1H), 8.60 (d, J=2.3 Hz, 1H), 8.13 (s, 1H), 7.99 (dd, J=8.9, 2.5 Hz, 1H), 7.94 (d, J=8.6 Hz, 1H), 7.64 (dd, J=8.7, 1.1 Hz, 1H), 6.80 (d, J=9.1 Hz, 1H), 5.78 (s, 2H), 3.76 (t, J=4.7 Hz, 4H), 3.61 (t, J=8.0 Hz, 2H), 3.49 (t, J=5.1 Hz, 4H), 0.84 (t, J=8.0 Hz, 2H), −0.12 (s, 9H); MS ESI 439.3 [M+H]+, calcd for [C23H30N4O3Si+H]+ 439.21.

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