69976-45-0Relevant academic research and scientific papers
Br?nsted Acid-Catalyzed Carbocyclization of 2-Alkynyl Biaryls
Gicquiaud, Julien,Hac?hasano?lu, Antoine,Hermange, Philippe,Sotiropoulos, Jean-Marc,Toullec, Patrick Y.
, p. 2025 - 2030 (2019)
Ortho-alkynyl biaryls react in the presence of catalytic amount of Br?nsted acids to give phenanthrenes in high yields under mild conditions. The activity and selectivity of this transformation are governed by the substitution pattern of the diarylalkyne moiety. Selectivity shifts are observed between the carbophilic Lewis and Br?nsted acid-catalyzed cycloisomerization involving alkyne activation. (Figure presented.).
Palladium-catalyzed construction of heteroatom-containing π-conjugated systems by intramolecular oxidative C-H/C-H coupling reaction
Saito, Kenta,Chikkade, Prasanna Kumara,Kanai, Motomu,Kuninobu, Yoichiro
supporting information, p. 8365 - 8368 (2015/06/02)
Synthesis of heteroatom-containing ladder-type π-conjugated molecules was successfully achieved via a palladium-catalyzed intramolecular oxidative C-H/C-H cross-coupling reaction. This reaction provides a variety of π-conjugated molecules bearing heteroatoms, such as nitrogen, oxygen, phosphorus, and sulfur atoms, and a carbonyl group. The π-conjugated molecules were synthesized efficiently, even in gram scale, and larger π-conjugated molecules were also obtained by a double C-H/C-H cross-coupling reaction and successive oxidative cycloaromatization.
