Benzoxetes and Benzothietes ¾ Heterocyclic Analogues of Benzocyclobutene
Benzo-condensed four-ring heterocycles, such as benzoxetes 1 and benzothietes 3 represent multi-purpose starting compounds for the preparation of various higher heterocyclic ring systems. The thermal or photochemical valence isomerizations between the benzenoid forms 1,3 and the higher reactive o-qu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2012-02-01
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| Series: | Molecules |
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| Online Access: | http://www.mdpi.com/1420-3049/17/2/1548/ |