Highly regioselective and stereoselective photodimerization of azine-containing stilbenes in neat condition: An efficient synthesis of novel cyclobutanes with heterocyclic substituents

Photocontrolled Binding of Styrylnaphthyridine Ligands to Abasic Site‐Containing DNA by Reversible [2+2] Cycloaddition and Cycloreversion

“…Photoresponsive stilbene-based derivatives offer diverse photoreactivity and have been applied as photoswitchable DNA ligands based on E-Z-isomerizations, [20,21,27] electrocyclization reactions, [19,22] and [2 + 2] cycloaddition/cycloreversion reactions. [28] Considering our experiences with resembling styrylquinolizinium derivatives and literature date, [29] we proposed that the [2 + 2] cycloaddition reaction will take place with appropriately substituted styrylnaphthyridine derivatives. This photoreaction is especially useful for the purpose of photoswitching DNA-binding properties [30] because the photodimer is sterically demanding and should not fit in the DNA binding sites.…”

Highly photosensitive furan acrylate derivatives and their solid-state photopolymerization

“…[9][10][11] With the photodimerization study of dimerization of cinnamic acid and its derivatives, 12,13 more diene monomers such as contained coumarin, stilbene and furan groups have been proved to be able to undergo solid-state photopolymerization. [14][15][16][17][18] This photodimerization of diene monomers is a process in which diolefin crystals are photochemically converted into linear polymers containing cyclobutane and aromatic groups alternating in the main chain. The cyclobutane formed by the cycloaddition reaction in the photodimerization has shown desired stability during thermal, sunlight, and chemical tests.…”