Facile Route to Tetrasubstituted Pyrazoles Utilizing Ceric Ammonium Nitrate.
JamesJ Devery, PramodK Mohanta, BrianM Casey, RobertA Flowers
文献索引：Synlett (9) , 1490-1494, (2009)
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摘要
A convenient approach for the synthesis of tetrasubstituted pyrazoles is described. The method involves the treatment of 1,3-diketones and allyltrimethylsilane with CAN followed by cerium-catalyzed addition of substituted hydrazines to construct pyrazoles in good yields.
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