formation of κ3-NNN′ zinc monoalkyls 10 and 11. Interestingly, dialkyls 1, 5, 7, and 8 can act as highly efficient single-component living initiators for the ring-opening polymerization of ε-caprolactone and rac-lactide in mild conditions after hours. These initiators efficiently mediated the immortal polymerization in the presence of excess of benzyl alcohol (up to 20 equiv), as evidenced by the narrow dispersity
高空间要求的反应NNN '-heteroscorpionate protioligands PBP吨
AMD-H,
TBP吨
AMD-H,和phbp吨
AMD-H(一)和低空间位阻类似物pbp
AMd-H,
TBPAMd-H,和phbp
AMd- H(b)中,用1个当量为AlR的3(R =甲基,乙基)继续进行以高产率,得到复合物的两个家族:单核二烷基铝二齿-acet
AMidinates [为AlR 2(κ 2 - ñ ' ñ ')]( κ 2 - ñ ' ñ '= PBP吨
AMD,R =我1,等2;
TBP t
AMd,R = Me 3,Et 4;phbp吨
AMD,R =我5,等6)和单齿-acet
AMidinates [为AlR 2(κ 2 - NN ')](κ 2 - NN '=
TBPAMd,R =我7 ; phbp
AMd,R =我8,等9)。在配合物7 – 9中,存在两种可能的CH–NH互变异构体,即低扩展π-NC–N'(sp