ELECTRONIC STABILIZATION OF NUCLEOPHILIC CARBENES
ELECTRONIC STABILIZATION OF NUCLEOPHILIC CARBENES
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DOI：
10.1021/ja00040a007
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发表时间：
1992-07-01
影响因子：
15
通讯作者：
KLINE, M
中科院分区：
文献类型：
--
作者：
ARDUENGO, AJ;DIAS, HVR;KLINE, M
合成了四种新的稳定的亲核卡宾，并对其结构进行了表征。咪唑核在C-2位稳定卡宾中心的显著能力通过分离1，3，4，5-四甲基咪唑-2-亚基来证明。三个带有芳基取代基的咪唑-2-亚基的分离与基于先前报道的推测相反。
Four new stable nucleophilic carbenes have been synthesized and structurally characterized. The remarkable ability of the imidazole nucleus to stabilize a carbene center at the C-2 position is demonstrated by the isolation of 1,3,4,5-tetramethylimidazol-2-ylidene. The isolation of three imidazol-2-ylidenes that bear aryl substituents is counter to speculations based on previous reports.