Chodkiewicz, Wladyslaw published the artcileDiethynylarenes, COA of Formula: C18H10, the publication is Compt. rend. (1957), 2061-2, database is CAplus.
Diethynylarenes have been prepared from 2 moles NaCCH with 1 mole quinone in liquid NH3. In the ethynylation of p-benzoquinone, 25-30% diquinol, m. 196°, forms, along with 50% hydroquinone from the reduction of the quinone. Ethynylation of anthraquinone yields 95% diquinol, m. 206°, with N-methylpyrrolidinone or HCONH2 as addnl. solvent at -30°; with 1 mole NaCCH/mole quinone at -50 to -60°, 40% monoquinol, m. 235°, results. Similarly, phenanthrenequinone gives 40% diquinol, m. 202°, along with other unidentified compounds Reduction of the diquinols with SnCl2 in aqueous HOAc gives diethynylarenes. Thus, 50% diethynylbenzene, m. 96°, λ 209, 214, 258, 270, 282, and 292 mμ, was obtained by reduction at 40°. Reduction at 10-20° yields diethynylanthracene, m. 170-80° (decomposition), λ 249, 259, 349, 356, 377, and 423 mμ. These diethynylarenes give the reactions of true diacetylene compounds and can be determined with Ag salts. They condense with ketones to give glycols; thus, diethynylbenzene with anhydrous KOH in amide solvents at 0° gives with Ph2CO 95% glycol, m. 220°; Ph2CO and diethynylanthracene give 95% glycol, m. 256°.
Compt. rend. 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, COA of Formula: C18H10.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem