Citation:
Wei DENG, Ye Feng WANG, Chen ZHANG, Lei LIU, Qing Xiang GUO. CuI/Proline-catalyzed N-Arylation of Nitrogen Heterocycles[J]. Chinese Chemical Letters,
;2006, 17(3): 313-316.
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Ma's CuI/proline procedure for the catalytic cross coupling between nitrogen heterocycles and aryl halides was markedly improved. The key finding was that K3PO4 was a much better base than K2CO3 for the reaction. With this new reaction condition the cross coupling with aryl iodides could be accomplished in 1, 4-dioxane instead of DMSO. This reactin also could be carried out in DMF. Furthermore, the coupling yields under the new conditions are usually higher than in Ma's original methods.
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Keywords:
- Cross coupling reaction,
- CuI,
- N-arylation,
- nitrogen heterocycle,
- proline
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