Takeuchi, Motoharu published the artcile[2.2]Naphthalenophanes from intermolecular [2 + 2] photocycloadditions of divinylnaphthalenes, Computed Properties of 152873-79-5, the publication is Journal of Organic Chemistry (1993), 58(26), 7388-92, database is CAplus.
Syn-[2.2]naphthalenophanes, e.g., I, were obtained exclusively in reasonable yields from the intermol. [2 + 2] photocycloadditions of divinylnaphthalenes. The position of the vinyl group and the type of vinyl substituent affected the isomer ratio of the products. The structures of naphthalenophanes were elucidated by 1H-NMR spectroscopy including COSY and NOESY experiments Among the divinylnaphthalenes examined, 1,4-, 1,5-, and 1,6-ones did not give the desired naphthalenophanes. By taking advantage of the effect of the substituents on the photoreaction, the authors could obtain [2.2](1,5)naphthalenophane derivatives from 1,5-bis(β-carboethoxyethenyl)naphthalene and 1,5-bis(β-phenylethenyl)naphthalene, but the authors could not obtain the 1,4-isomers, probably because they are highly strained. Although a mixture of two different divinylnaphthalenes was irradiated, only homoadducts were obtained; no cross adducts were detected.
Journal of Organic Chemistry published new progress about 152873-79-5. 152873-79-5 belongs to naphthyridine, auxiliary class Trifluoromethyl,Sulfonate,Benzene, name is 1,5-NAphthalenebis(trifluoromethanesulfonate), and the molecular formula is C38H74Cl2N2O4, Computed Properties of 152873-79-5.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem