On-surface synthesis of planar acenes via regioselective aryl-aryl coupling.
Chem Commun (Camb)
; 56(36): 4890-4893, 2020 May 05.
Article
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| MEDLINE
| ID: mdl-32236253
The reaction of 2,2'-dibromo-biphenyl on a Ag(111) surface leads to the formation of planar acenes with a high-regioselectivity rather than nonplanar saddle-shaped tetraphenylene as the typical product in solution chemistry. The regioselective aryl-aryl coupling reaction is attributed to the hydrogen repulsion between the reactants on the confined two-dimensional surface.
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2020
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