用于环状酯开环聚合的两性离子双（酚盐）胺镧系配合物
Zwitterionic bis(phenolate)amine lanthanide complexes for the ring-opening polymerisation of cyclic esters.
作者信息
Dyer Hellen E, Huijser Saskia, Schwarz Andrew D, Wang Chao, Duchateau Robbert, Mountford Philip
机构信息
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, UK.
出版信息
Dalton Trans. 2008 Jan 7(1):32-5. doi: 10.1039/b714583g.
The reaction of Sm{N(SiMe3)2}3 with the bis(phenol)amines H2O2N(R) (H2O2N(R) = RCH2CH2N(2-HO-3,5-C6H2(t)Bu2)2; R = OMe, NMe2 or Me) gave exclusively zwitterions Sm(O2N(R))(HO2N(R)). For R = OMe or NMe2 these were efficient catalysts for the ring-opening polymerisation of epsilon-caprolactone and D,L-lactide with a tendency to form cyclic esters; in contrast, no polymerisation was observed for R = Me.
三（三甲基硅基）氨基钐（Sm{N(SiMe3)2}3）与双酚胺H2O2N(R)（H2O2N(R) = RCH2CH2N(2-HO-3,5-C6H2(t)Bu2)2；R = OMe、NMe2或Me）反应仅生成两性离子Sm(O2N(R))(HO2N(R))。对于R = OMe或NMe2，这些化合物是ε-己内酯和D,L-丙交酯开环聚合的有效催化剂，且有形成环状酯的倾向；相比之下，当R = Me时未观察到聚合反应。
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