Intramolecular [2+2+1] Cycloadditions with (Cyclobutadiene)tricarbonyliron

Seigal, Benjamin A.; An, Mi Hyun; Snapper, Marc L.

doi:10.1002/ange.200501100

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Benzocylobutadiene Biphenylenes and [N]phenylenes1

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2005

2022

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“…While cyclobutadiene and benzocyclobutadiene have been used in forward synthetic procedures, [36][37][38][39][40] their high reactivities preclude them from being further implemented in organic materials. To further stabilize cyclobutadiene, double benzannulation can be envisaged within the biphenylene ring structure.…”

Section: Benzocylobutadiene Biphenylenes and [N]phenylenesmentioning

confidence: 99%

Manifestations of Antiaromaticity in Organic Materials: Case Studies of Cyclobutadiene, Borole, and Pentalene

2022

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This Review surveys the experimental and synthetic history of three classic antiaromatic cores: cyclobutadiene, borole, and pentalene. The coverage extends from the bare molecular cores to fused or substituted variants that impart thermodynamic or kinetic stability to the antiaromatic systems. Recent studies to utilize the unusual properties of these antiaromatic cores in the context of advanced electronic materials are discussed.

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