Synthesis, Characterization, and Catalysis in ϵ-Caprolactone Polymerization of Aluminum and Zinc Complexes Supported by <i>N</i>,<i>N</i>,<i>N</i>-Chelate Ligands
作者:Zuo-Yun Chai、Cheng Zhang、Zhong-Xia Wang
DOI:10.1021/om701112m
日期:2008.4.1
complexes [Al(Cl)(R)L] (R = Me, 6a; R = Et, 6b). Structurally similar N,N,N-chelate zinc complex [Zn(Et)2-(3,5-Me2C3HN2)-6-N(Ph)P(Ph2)═CH}C5H3N}] (9) was obtained by reaction of 2-(3,5-Me2C3HN2)-6-PhN═P(Ph)2CH2}C5H3N (8) with ZnEt2. The aluminum and zinc complexes bearing [2-N(SiMe3)═P(Ph)2}-6-N(SiMe3)P(Ph)2═CH}C5H3N}]− ligand, 14 and 15, were similarly prepared by reaction of 2-Me3SiN═P(Ph)2}-6-M
合成并表征了吡啶基的N,N,N-螯合物配体负载的一系列铝和锌配合物。用LiBu n / tmeda处理2-(3,5-二甲基-1 H-吡唑-1-基)-6-((三甲基甲硅烷基)甲基)吡啶(2),然后用PhCN处理得到锂络合物[Li 2- (3,5-Me 2 C 3 HN 2)-6- N(SiMe 3)C(Ph)═CH} C 5 H 3 N}]([LiL])(3)。3与ZnCl 2的反应形成相应的氯化锌配合物[Zn(Cl)L](4),然后用甲基或乙基锂处理,将其转化为甲基或乙基锌络合物[Zn(R)L](R = Me,5a ; R = Et,5b)。4与LiHBEt 3反应也生成了乙基锌配合物(5b)。的反应4与为AlR 3(R =甲基,乙基),得到烷基氯化铝配合物[铝(Cl)的(R)L](R = Me中,图6a ; R =的Et,图6b)。结构相似的N,N,N螯合物锌络合物[Zn(Et)2-(3