TY - JOUR
T1 - Catalytic performance of tantalum-η2-alkyne complexes [TaCl3(R1C≡CR2)L2] for alkyne cyclotrimerization
AU - Oshiki, Toshiyuki
AU - Nomoto, Hiroshi
AU - Tanaka, Kouji
AU - Takai, Kazuhiko
PY - 2004/5/1
Y1 - 2004/5/1
N2 - Structurally characterized tantalum-η2-alkyne complexes [TaCl3(η2-EtC=CEt)L2] (1, L2 = 1,2-dimethoxyethane (DME); 2, L = py) acted as catalysts for the cyclotrimerization of terminal alkynes. The catalytic reaction proceeded at 25 °C within few hours and the trisubstituted benzenes were obtained without the formation of linear oligomers. A new tantalum complex having a terminal alkyne ligand, [TaCl3(η2-Me3SiC≡ CH)(dme)l (3), was prepared, and its catalytic performance was also investigated.
AB - Structurally characterized tantalum-η2-alkyne complexes [TaCl3(η2-EtC=CEt)L2] (1, L2 = 1,2-dimethoxyethane (DME); 2, L = py) acted as catalysts for the cyclotrimerization of terminal alkynes. The catalytic reaction proceeded at 25 °C within few hours and the trisubstituted benzenes were obtained without the formation of linear oligomers. A new tantalum complex having a terminal alkyne ligand, [TaCl3(η2-Me3SiC≡ CH)(dme)l (3), was prepared, and its catalytic performance was also investigated.
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U2 - 10.1246/bcsj.77.1009
DO - 10.1246/bcsj.77.1009
M3 - Article
AN - SCOPUS:2642584965
SN - 0009-2673
VL - 77
SP - 1009
EP - 1011
JO - Bulletin of the Chemical Society of Japan
JF - Bulletin of the Chemical Society of Japan
IS - 5
ER -