European Journal of Organic Chemistry
10.1002/ejoc.201601043
COMMUNICATION
A 10 mL microwave tube with a magnetic stir bar was charged with
Pd(OAc)2 (9.0 mg, 20 mol%), distilled water (1.0 mL) and corresponding
azide (0.20 mmol). The reaction mixture was stirred for 6 or 12 hours at
110 °C under microwave conditions (200 W). After cooling, the biphasic
solution was diluted with 5 mL of water and 10 mL of CH2Cl2 and
separated. The aqueous phase was extracted with an additional 3 × 10
mL of CH2Cl2. The organic phase was dried over Na2SO4 and filtered.
The crude reaction mixture was purified by silica gel column
chromatography with n-Hexane/EtOAc as an eluent to give the desired
product.
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Acknowledgements ((optional))
We are grateful for financial support by National Natural Science
Foundation of China (21332005, 21472085) and Qing Lan
Project.
Keywords: C–H amination •arylazide•palladium catalysis
•water•carbazole
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