Synthesis of substituted pyrazoles via tandem cross-coupling/electrocyclization of enol triflates and diazoacetates.

Synthesis of substituted pyrazoles via tandem cross-coupling/electrocyclization of enol triflates and diazoacetates.
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DOI:
10.1021/jo201042c
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发表时间:
2011-08-05
影响因子:
3.6
通讯作者:
Frantz, Doug E.
Frantz, Doug E.
中科院分区:
化学2区
文献类型:
--
作者:
Babinski, David J.;Aguilar, Hector R.;Still, Raymond;Frantz, Doug E.

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报道了烯醇三氟甲磺酸酯和重氮乙酸酯串联催化偶联/电环化合成3,4,5-三取代吡唑的方法。这种方法的初始范围被证明在一系列的差分取代的无环和环状烯醇三氟甲磺酸酯以及一套精心设计的重氮乙酸酯,以提供相应的吡唑具有高度的结构复杂性。
The synthesis of 3,4,5-trisubstituted pyrazoles via a tandem catalytic cross-coupling/electrocyclization of enol triflates and diazoacetates is presented. The initial scope of this methodology is demonstrated on a range of differentially substituted acyclic and cyclic enol triflates as well as an elaborated set of diazoacetates to provide the corresponding pyrazoles with a high degree of structural complexity.
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