Kotlyarevskii, I. L. published the artcileOxidative polycondensation of diacetylene compounds, Application In Synthesis of 18512-55-5, the publication is Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya (1961), 1905-7, database is CAplus.
cf. CA 54, 24466i.-Products of dehydrogenation of diethylbenzenes (Balandin, et al., CA 54, 8676h) brominated in CCl4 at -15° gave a tetrabromide (I), m. 156-7°. Dehydrobromination (Deluchat, CA 28, 30621) gave a low yield of p-diethynylbenzene (II) m. 95°. Hydrogenation of p-Ac2C6H4 over Raney Ni at normal temperature and pressure gave 86.5% 1, 4-bis(α-hydroxyethyl)benzene, m. 78.4-80°, passed over Al2O3 at 330° in dioxane gave crude divinylbenzene which was directly brominated to I. II in dioxane was treated with a solution of Cu2Cl2 and NH4Cl in aqueous HCl and the system was shaken and blown with O until gas uptake ceased; treatment of the complex with Et2O-H2O gave a red-orange oligomer with repeating links of p-CCCεH4CC which is insoluble and explodes above 120°. Similar oxidation of II in pyridine in the presence of Cu2Cl2 gave a yellow oligomer free of Cl and Cu (the reddish product contained some Cl but was free of Cu). Similar oxidation of 1,4-diethynyl-1,4-dihydroxycyclohexane gave a light-colored oligomer containing 70.75% C. Similarly were prepared insoluble oligomers from 9,10-diethynyl-9,10-dihydroxy-9,10-dihydroanthracene, 9,10-diethynyl-9,10-dihydroxy-9,10-dihydrophenanthrene, and 9,10-diethynylanthracene (the latter contained some Cl). The oligomers were generally insoluble in the usual solvents.
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya published new progress about 18512-55-5. 18512-55-5 belongs to naphthyridine, auxiliary class Alkynyl,Anthracene, name is 9,10-Diethynylanthracene, and the molecular formula is C18H10, Application In Synthesis of 18512-55-5.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem