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(15) General Procedure
All chemicals were obtained from commercial source and
used without further purification. A stirred suspension of
aryl halides (0.5 mmol), azoles or amides (0.5 mmol), CuI
powder (0.05 mmol), Cs2CO3 (1.0 mmol), and L5 (0.1
mmol) in MeCN was refluxed for 12 h (monitored by TLC)
under nitrogen. After the mixture was cooled to r.t., the
MeCN was removed in vacuo. The solid was then extracted
with EtOAc (3 × 10 mL), washed with H2O (3 × 10 mL), and
dried over Na2SO4. After the solvent was removed, the crude
mixture was purified by silica gel column chromatography
to provide the desired product.
Synlett 2009, No. 16, 2663–2668 © Thieme Stuttgart · New York