Ried, Walter published the artcileEthynylation reactions. XV. Light reactions of 1,4-diethynyl aromatic compounds, Application In Synthesis of 18512-55-5, the publication is Journal fuer Praktische Chemie (Leipzig) (1961), 306-9, database is CAplus.
cf. CA 55, 13392d, 21068c. Light sensitivity of diethynyl aromatic compounds (I) (CA 53, 5210f) was used in preparation of offset printing plates. I, coated from solution onto Al plates, was exposed to light through a negative, unreacted I was removed with solvents, and exposed Al etched with 1% H3PO4. Light sensitivity of I increased in the order: 1,4-diethynyl benzene, 9,10-diethynyl anthracene, 1,4-diethynyl naphthalene, and 1,4-diethynyl-2,3-dichloronaphthalene. Light caused ethynyl groups to trimerize to polymeric benzene derivatives
Journal fuer Praktische Chemie (Leipzig) 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