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- W4206182992 endingPage "126" @default.
- W4206182992 startingPage "79" @default.
- W4206182992 abstract "The main feature of gas-phase pyrolysis reactions is fragmentation of molecules. The breakage of one bond leads to a pair of free radicals. The breakage of two or more bonds usually involves concerted reactions taking place via cyclic transition states. The majority of these reactions are either four-membered or six-membered, and numerous thermal fragmentation reactions can be described as symmetry-allowed pericyclic reactions, such as the retro-ene reaction and the Cope rearrangement. The ene reaction occurs with the addition of an electron-deficient double bond to an olefin containing an allylic hydrogen atom. Thermal retro-ene reactions are a method for accessing unsaturated molecules and parallel the retro-Diels–Alder reaction. However, when a concerted reaction is geometrically impossible, it may occur through a stepwise biradical pathway. The chapter presents an extensive discussion on reaction intermediates – radicals, diradicals, benzynes, carbenes, and nitrenes." @default.
- W4206182992 created "2022-01-25" @default.
- W4206182992 date "2019-11-08" @default.
- W4206182992 modified "2023-09-24" @default.
- W4206182992 title "Reaction Mechanism" @default.
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