An air stable carbene and mixed carbene "dimers"

被引:296
作者
Arduengo, AJ [1 ]
Davidson, F [1 ]
Dias, HVR [1 ]
Goerlich, JR [1 ]
Khasnis, D [1 ]
Marshall, WJ [1 ]
Prakasha, TK [1 ]
机构
[1] DuPont Sci & Engn Lab, Expt Stn, Wilmington, DE 19880 USA
关键词
D O I
10.1021/ja973241o
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The air-stable crystalline carbene 1,3-dimesityl-4,5-dichloroimidazol-2-ylidene (2) is produced from the chlorination of 1,3-dimesityimidazol-2-ylidene (1) by 2 equiv of carbon tetrachloride. The physical and spectroscopic properties of the carbene are reported. The features which contribute to the exceptional stability of the carbene are discussed. Further reaction of 2 with carbon tetrachloride leads to reduction of CCl4 to dichlorocarbene. The formation of the mixed carbene "dimers" (olefins) from in situ generated dichlorocarbene and various imidazol(in)-2-ylidenes is also reported. The tellurones derived from 1 and 2 are synthesized and compared.
引用
收藏
页码:12742 / 12749
页数:8
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