Achieving a series of solid-state [2 + 2] cycloaddition reactions involving 1,2-bis(2-pyridyl)ethylene within halogen-bonded co-crystals.

Autor: Andren, Max, Bosch, Eric, Krueger, Herman R., Groeneman, Ryan H.
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Zdroj: CrystEngComm; 3/14/2024, Vol. 26 Issue 10, p1349-1352, 4p
Abstrakt: The solid-state [2 + 2] cycloaddition reaction of trans-1,2-bis(2-pyridyl)ethylene through both co-crystallization and mechanical grinding is reported. The photoreaction is achieved by using iodoperchlorobenzene as a molecular template. The co-crystal is sustained primarily by I⋯N halogen bonds and homogeneous face-to-face π–π stacking interactions. The combination of these non-covalent forces ultimately places the reactant in a suitable position to photoreact. In addition, a pair of photoreactive solids were also achieved through a solvent-free mechanical grinding approach with similar yields. [ABSTRACT FROM AUTHOR]
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