摘要:
Chemoselective deprotonation of {Cp*Zr((NHBu)-Bu-t)-[N(Pr-i)C(Me)N(Pr-i)]}[B(C6F5)(4)] (2a) cleanly provides either the neutral enolamide, Cp*Zr((NHBu)-Bu-t)[N(Pr-i)C(CH2)N(Pr-i)] (5), or the terminal imido, Cp*Zr((NBu)-Bu-t)[N(Pr-i)C(CH3)N(Pr-i)] (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 (BuNH2)-Bu-t.