A Stable Four-Membered N-Heterocyclic Carbene
Journal of the American Chemical Society2004Vol. 126(33), pp. 10198–10199
Citations Over TimeTop 10% of 2004 papers
Abstract
The synthesis of the first four-membered N-heterocyclic carbene is described. Depending on the substituents on the nitrogen atoms, it is possible to characterize at room temperature the carbene dimer or the free carbene. Crystallographic analyses are provided for these carbene species.
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