Definition of Electrocyclization. Meaning of Electrocyclization. Synonyms of Electrocyclization

- or thermal. Reactions can be either ring-opening or ring-closing (electrocyclization). Depending on the type of reaction (photochemical or thermal) and...
- 3-butadiene (a 4π-electrocyclization) is [π4a]. The conrotatory electrocyclic ring opening of cyclobutene (a reverse 4π-electrocyclization) is [σ2a + π2s]...
- g. 65 kJ mol−1 for 4-aminostilbene). The activation energy of the electrocyclization is 73 kJ mol−1 for stilbene. Both processes are often applied in molecular...
- azomethine ylides are capable of [1,5]- and [1,7]-electrocyclizations. An example of a [1,7]-electrocyclization of a diphenylethenyl-substituted azomethine...
- with structural complexity. Additionally, W(CO)5(THF) facilitates electrocyclization processes. In these reactions, the tungsten-bound alkyne undergoes...
- demonstrated experimentally by Charles Shoppee to be an intramolecular electrocyclization and is outlined below. Activation of the ketone by the acid catalyst...
- rules. The name derives from the idea that the substituents in an electrocyclization appear to rotate over the course of the reaction, and thus selection...
- nucleophile. Its formation can otherwise be viewed as a 2-electron electrocyclization of a 1,3-dipole, which can be captured in Diels Alder reactions. The...
- therefore the intermediate's formation cannot be viewed as a 2-electron electrocyclization reaction. The selectivity is similar to the Favorskii rearrangement...
- products. The mechanism of this reaction is proposed to be a 4-π electrocyclization very much like the Nazarov cyclization reaction. To obtain the 2-furyl...