Sakaguchi, Tomoya published the artcileSimple Modifications for the Facile Preparation of 1,1,2,3,4,4-Hexaaryl-1,3-butadienes, Computed Properties of 613-33-2, the publication is Helvetica Chimica Acta (2022), 105(2), e202100232, database is CAplus.
In this reaction system, the insertion of alkynes into the palladium-carbon bond was accelerated by changing the palladium intermediate to the cationic one. When silver nitrate was used, the reaction of diarylalkynes with arylboronic acids took place smoothly under mild reaction conditions without any ligand to give the coupling diene products in excellent yields. On the contrary, the reaction hardly proceeded with silver oxide and silver carbonate. Poly(hexaphenyl-1,3-butadiene) (PHB) with a similar mol. weight to the previously prepared one was also synthesized from the reaction of diphenylacetylene with phenyldiboronic acid under mild reaction conditions.
Helvetica Chimica Acta published new progress about 613-33-2. 613-33-2 belongs to catalysis-chemistry, auxiliary class Benzene, name is 4,4′-Dimethyldiphenyl, and the molecular formula is C14H14, Computed Properties of 613-33-2.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia