COMMUNICATIONS
Palladium and Copper Cocatalyzed Intermolecular Cyclization Reaction
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Experimental Section
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General Procedure
An oven-dried tube was charged with 1 (0.4 mmol), 2
(0.2 mmol), Pd(OAc)2 (5 mol%), Cu(acac)2 (10 mol%),
Na2CO3 (0.4 mmol) and 2 mL DMF. Then the reaction mix-
ture was stirred at 1108C under air for 12 h. After cooling to
room temperature, the reaction mixture was diluted with
30 mL of CH2Cl2, washed with 15 mL H2O, and dried over
anhydrous Na2SO4. Then the solvent was evaporated under
vacuum, the residues were purified by column chromatogra-
phy, eluting with petroleum ether/EtOAc (2:1) to afford the
desired product.
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Acknowledgements
We thank the State Key Laboratory of Applied Organic
Chemistry for financial support.
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