There are different strategies to introduce the twist into the PAH structure. Common methods include using chiral building blocks or applying torsional strain to the molecule during synthesis. The choice of method depends on the specific target structure.
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1,3-bis<4-(trifluoromethyl)phenyl>cyclopenta
9
c
2,5-di(p-methoxyanilino)-3,6-dihydroterephthalate dimethyl ester
