Facile and reversible displacement of η-C5H5from Zr by organolithiums; formation of (η5-cyclopentadienyl) trialkylzirconiums and their reactions eith electrophiles and alkenes
摘要:
Treatment of [Zr(eta-C5H5)2Cl(2)] with 3 equiv. of Bu(n)Li gives a 1:1 mixture of [Zr(eta-C5H5)Bu(3)(n)] and Li(C5H5), which reacts with HCl or I-2 to give n-butane and [Zr(eta-C5H5)(2)Cl-2] or Bu(n)I and [ZT(eta-C5H5)(2)I-2], respectively, while the reaction of [Zr(eta-C5H5>2Cl(2)] with 3.3 equiv. of C6H12Li and hex-1-ene provides a novel zirconate best represented by 3.