Complexes of platinum with triphenylphosphine and 2-methyl-3-butyn-2-ol

Polymerization of Substituted Acetylenes Carrying Non-Polar and Polar Groups with Transition Metal Acetylide Catalysts

“…Palladium acetylides containing triphenylphosphine ligands are effective catalysts for the polymerization of OHP, but nickel complexes are not, probably due to the instability of nickel acetylides in alcohol. [14] The homogeneous polymerization of OHP initiated by palladium catalysts produced soluble polymers with weight-average molecular weights as high as 5.7 6 10 4 in yields as high as 66%. As in the case of p-DEB polymerization, the complexes with triphenylphosphine ligands showed higher catalytic activity in terms of yield towards OHP polymerization than the corresponding complexes with tributylphosphine ligands.…”

Novel α,β-C,C-Coupling Reaction of 1-Alkynyl Groups via I2 Oxidation at Nickelate(II) Centers

“…Platinum-group metals are known to initiate C,C-coupling of 1-alkynes. For linear oligomerizations, Pt(II) complexes are efficient homogeneous catalysts, while alkynyl groups in the presence of nickel or palladium are trimerized in stoichiometric reactions.…”