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首页> 外文期刊>RSC Advances >Combined inorganic base promoted N-addition/[2,3]-sigmatropic rearrangement to construct homoallyl sulfur-containing pyrazolones
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Combined inorganic base promoted N-addition/[2,3]-sigmatropic rearrangement to construct homoallyl sulfur-containing pyrazolones

机译：组合的无机碱促进N加成/ [2,3]-σ重排以构建均烯丙基含硫吡唑啉酮

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摘要

The first sequentially combined inorganic base promoted N-addition/[2,3]-sigmatropic rearrangement reaction of α-alkylidene pyrazolinones and propargyl sulfonium salts has been reported to construct homoallyl sulfur-containing pyrazolones with moderate to excellent yields. α-Alkylidene pyrazolinones function as N-nucleophilic agents distinguished from the reported C-addition reactions. Propargyl sulfonium salts were first involved in the [2,3]-sigmatropic rearrangement protocol differentiated from the well-established annulation reactions. The excellent regioselectivity, the broad scope of substrates, gram-scale synthesis and convenient transformation embody the synthetic superiority of this cascade process.
机译：据报道，α-亚烷基吡唑啉酮与炔丙基sulf盐的第一个顺序组合的无机碱促进的N-加成/ [2,3]-σ重排反应以中等至优异的产率构建了均烯丙基的含硫吡唑啉酮。 α-亚烷基吡唑啉酮类作为N-亲核试剂，与已报道的C加成反应不同。炔丙基sulf盐首先参与[2,3]-σ重排规程，与公认的环化反应有所不同。出色的区域选择性，广泛的底物范围，克级合成和便捷的转化体现了该级联过程的合成优势。

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