Chemoselective Deprotonations of a Cationic Zirconium Primary
Amido Complex to Either a Neutral Zirconium Terminal Imido or a
Noninterconverting Tautomer

Kissounko, Denis A.; Epshteyn, Albert; Fettinger, James C.; Sita, Lawrence R.

doi:10.1021/om051007y.s004

om051007y_si_004.pdf (181.1 kB)

Chemoselective Deprotonations of a Cationic Zirconium Primary Amido Complex to Either a Neutral Zirconium Terminal Imido or a Noninterconverting Tautomer

journal contribution

posted on 2006-02-27, 00:00 authored by Denis A. Kissounko, Albert Epshteyn, James C. Fettinger, Lawrence R. Sita

Chemoselective deprotonation of {Cp*Zr(NH^tBu)[N(ⁱPr)C(Me)N(ⁱPr)]}[B(C₆F₅)₄] (2a) cleanly provides either the neutral enolamide, Cp*Zr(NH^tBu)[N(ⁱPr)C(CH₂)N(ⁱPr)] (5), or the terminal imido, Cp*Zr(N^tBu)[N(ⁱPr)C(CH₃)N(ⁱPr)] (6). These two tautomers do not interconvert, and no evidence was obtained for deprotonation of 2a in the presence of an excess of the primary amine ^tBuNH₂.