203129-39-9Relevant academic research and scientific papers
Unprecedented reactivity of 1-alkynes with 2-chloroethanol promoted by cationic solvento(trifluoromethyl)platinum(II) complexes. Synthesis of β-alkoxyalkenyl derivatives and X-ray structure of trans-[Pt{C(H)=C(Ph)OCH2CH2Cl}(CO)(PPh3) 2][BF4]·Et2O
Michelin, Rino A.,Mozzon, Mirto,Vialetto, Barbara,Bertani, Roberta,Bandoli, Giuliano,Angelici, Robert J.
, p. 1220 - 1226 (1998)
Reactions at ambient temperature of the solvento cationic trifluoromethyl complex trans-[Pt(CF3)(PPh3)2(solv)][BF4] with 1.5 equiv of 1-alkynes RC≡CH (R = Ph, p-tolyl) and 2-chloroethanol afford in high yield the β-alkoxyalkenyl complexes trans-[Pt{C(H)=C(R)-OCH2CH2Cl}(CO)(PPh3) 2][BF4] (R = Ph (1), p-tolyl (2)). In these reactions the CF3 group is also converted to a CO ligand. Complexes 1 and 2 were characterized by spectroscopic techniques and 1 also by an X-ray diffraction analysis. Reaction of the alkynyl complex trans-[Pt(CF3)(C≡C-p-tolyl)(PPh3)2] with 2-chloroethanol and 1 equiv of HBF4 gives the acetylide-carbonyl derivative trans-[Pt(C≡C-p-tolyl)(CO)(PPh3)2][BF4] (3), which was also formed by reaction of trans-[Pt(CF3)(C≡C-p-tolyl)(PPh3)2] with aqueous HBF4. Possible mechanisms of these reactions are discussed. ? Dedicated to Professor Warren R. Roper on the occasion of his 60th birthday.
