Chemistry Letters p. 623 - 626 (1987)
Update date:2022-09-26
Topics:
Takahashi, Tamotsu
Swanson, Douglas R.
Negishi, Ei-ichi
Zirconacyclopropenes represented by Cp2Zr(PhCCPh)(PR3) (4), where PR3 is PMe3 or PMePh2, have been prepared by the reaction of Cp2Zr(PR3)2 with PhC<*>CPh, isolated as yellowish crystals, and spectroscopically characterized.Zirconacyclopropenes readily react with proton donors, carbonyl compounds, e.g., acetone, and alkynes to induce dimerization of alkynes and are likely intermediates in the ZrCp2-induced bicyclization of enynes.
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