1024596-92-6Relevant academic research and scientific papers
Ligand-controlled cross-dimerization and -trimerization of alkynes under nickel catalysis
Matsuyama, Naoto,Tsurugi, Hayato,Satoh, Tetsuya,Miura, Masahiro
experimental part, p. 2274 - 2278 (2009/10/14)
The cross-dimerization of diphenylacetylene with trimethylsilylacetylene via C-H bond cleavage in the presence of a catalytic amount of bis(cyclooctadiene)nickel [Ni(cod)2] together with a pyridine-based ligand efficiently proceeds to give the corresponding enyne compound with good yield. In contrast, their 1:2 cross-trimerization leading to a dienyne derivative takes place selectively using a triarylphosphine ligand. The regioselective cross-dimerization of some unsymmetrical internal arylalkynes with terminal silylacetylenes is also accomplished using the pyridine ligand.
Rhodium-catalyzed anti selective cross-addition of bis(trimethylsilyl)- acetylene to diarylacetylenes via carbon-silicon bond cleavage
Horita, Akinobu,Tsurugi, Hayato,Satoh, Tetsuya,Miura, Masahiro
scheme or table, p. 1751 - 1754 (2009/04/12)
The addition of bis(trimethylsilyl)acetylene to diarylacetylenes proceeds efficiently and selectively in a formal anti fashion in the presence of [Rh(OH)(cod)]2/bisphosphine and phenol as catalyst and activator, respectively, accompanied by cleavage of one of the C-Si bonds to produce the corresponding (Z)-enynes. The products can further couple with the same or a different diarylacetylene molecule to give rise to (Z,Z)-1,2,5,6-tetraaryl-1,5- hexadien-3-ynes that show relatively strong solid-state fluorescence.
