A synergic catalysis of (salicylaldiminate)2AlEt and (BnO)2AlEt in the ring-opening polymerization of ε-caprolactone

A synergic catalysis of (salicylaldiminate)2AlEt and (BnO)2AlEt in the ring-opening polymerization of ε-caprolactone
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(水杨醛二酸酯)2AlEt 和 (BnO)2AlEt 协同催化 ε-己内酯开环聚合

DOI:
10.1038/s41428-019-0187-2
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发表时间:
2019
期刊:
影响因子:
2.8
通讯作者:
Oishi Masataka
Oishi Masataka
中科院分区:
化学3区
文献类型:
--
作者:
Nomura Nobuyoshi;Yamakawa Daisuke;Marutani Tomohiro;Aoyama Takuji;Oishi Masataka

文献摘要

相似文献

通过 X 射线衍射报告了 L2AlEt 的固态结构。 BnOH(1 当量 L2AlEt)选择性地与约 0.5 当量发生反应。 L2AlEt 提供游离的 L–H(约 1 当量),同时保持 L2AlEt(约 0.5 当量)。化学计量平衡表明形成0.5当量。 (BnO)2AlEt。提出了通过两种共存的铝配合物(L2AlEt(0.50mol%)作为CL的路易斯酸活化剂和(RO)2AlEt(0.50mol%)作为亲核试剂)的协同催化来实现CL的ROP。
The solid-state structure of L2AlEt is reported by X-ray diffraction. BnOH (1 equiv. to L2AlEt) selectively reacts with ~0.5 equiv. of L2AlEt to afford free L–H (~1 equiv.) while maintaining L2AlEt (~0.5 equiv.). The stoichiometric balance suggests the formation of 0.5 equiv. of (BnO)2AlEt. The ROP of CL via the synergic catalysis of the two coexistent Al-complexes, L2AlEt (0.50 mol%) as a Lewis acid activator of CL and (RO)2AlEt (0.50 mol%) as a nucleophile, is proposed.