CO Fixation to Stable Acyclic and Cyclic Alkyl Amino Carbenes:Stable Amino Ketenes with a Small HOMO-LUMO Gap**

摘要

Reactive intermediates play a central role in modern chemistry.Since 1900,and the discovery by Gomberg of a stable radical,many species that were thought to be too short-lived for observation have been isolated.The availability of stable versions of reactive intermediates has allowed for a superior control of their reactivity and a better understanding of the mechanism of chemical reactions.