So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Sakaguchi, Tomoya; Kusumoto, Naoki; Shimomura, Osamu; Ohtaka, Atsushi researched the compound: Palladium(II) acetate( cas:3375-31-3 ).Quality Control of Palladium(II) acetate.They published the article 《Simple Modifications for the Facile Preparation of 1,1,2,3,4,4-Hexaaryl-1,3-butadienes》 about this compound( cas:3375-31-3 ) in Helvetica Chimica Acta. Keywords: hexaphenyl butadiene preparation; diphenylacetylene phenylboronic acid palladium catalyst oxidative coupling. We’ll tell you more about this compound (cas:3375-31-3).
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.
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