期刊
INORGANIC CHEMISTRY COMMUNICATIONS
卷 14, 期 7, 页码 1140-1144出版社
ELSEVIER
DOI: 10.1016/j.inoche.2011.04.008
关键词
Zinc complex; Catalyst; N,O-bidentate; Ring-opening polymerization; epsilon-Caprolactone; beta-Butyrolactone
资金
- National Science Council, Taiwan [NSC99-2113-M-033-007-MY2, NSC99-2113-M-033-005-MY2]
Two amino-benzotriazole phenol ligands, 2-(2H-benzotriazol-2-yl)-6-((diethylamino)methyl)-4-alkyl-phenol (alkyl = CH3, (BTP)-B-C1DEA-H, and alkyl = C8H17, (BTP)-B-C8DEA-H) were prepared through the Mannich condensation of 4-alkyl-2-(2H-benzotriazol-2-yl)phenol with the mixtures of excess paraformaldehyde and diethylamine under reflux conditions. Zinc complexes supported by amino-benzotriazole phenoxide ligands ((BTP-)-B-C1DEA and (BTP-)-B-C8DEA) were synthesized and fully characterized. The reaction of ZnEt2 with (BTP)-B-DEA-H (1 equiv.) produces the tetra-coordinated dimeric zinc complexes [(mu-(BTP)-B-C1DEA)ZnEt](2) (1) and [(mu-(BTP)-B-C8DEA)ZnEt](2) (2). Experimental results indicate that complex 1 catalyzes the ring-opening polymerization of epsilon-caprolactone and beta-butyrolactone with good catalytic activities in a controlled character. (C) 2011 Elsevier B.V. All rights reserved.
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