Abstract
Heterocumulenes (B) are compounds with a substructure Het1=C=Het2, in which at least one of the groups “Het” is an O atom, an S atom, or an NR group (Figure 8.1). They can be regarded as anhydrides of the carbonic acid derivatives A. In fact, heterocumulenes are typically generated by eliminating water from such carbonic acid derivatives. Sometimes this occurs spontaneously, especially at elevated temperatures, but generally only upon treatment with a dehydrating reagent.
Survey of the interconversion of carbonic acid derivatives and heterocumulenes.
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(2010). Carbonic Acid Derivatives and Heterocumulenes and Their Interconversion. In: Harmata, M. (eds) Organic Mechanisms. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03651-4_8
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