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標題: Zinc anilido-oxazolinate complexes as initiators for ring opening polymerization
作者: Chen, C.T.
Chan, C.Y.
Huang, C.A.
Chen, M.T.
Peng, K.F.
關鍵字: single-site catalysts;coordination chemistry;alternating;copolymerization;metal-complexes;epsilon-caprolactone;beta-butyrolactone;cyclohexene oxide;bond formation;cyclic esters;main-group
Project: Dalton Transactions
期刊/報告no:: Dalton Transactions, Issue 36, Page(s) 4073-4078.
Three new anilido-oxazolines, ortho-C6H4(NHAr ')(4,4-dimethyl-2-oxazoline) [Ar ' = 2,4,6-trimethylphenyl, HNPh(TriMe)Oxa ( 1); 2,6-diisopropylphenyl, HNPh(DiiPr)Oxa( 2); 2-methoxyphenyl, HNPh(OMe)Oxa ( 3)], have been prepared. Reactions of 1 or 2 with one molar equivalent of ZnEt2 in tetrahydrofuran or hexane solution give the zinc ethyl complexes (NPh(TriMe)Oxa)ZnEt ( 4) and (NPh(DiiPr)Oxa)ZnEt ( 5). The dinuclear zinc benzyloxide complexes, [(NAr ' Oxa)Zn(mu-OBn)](2), [Ar ' = 2,4,6-trimethylphenyl, ( 6); 2-methoxyphenyl, ( 7)], were synthesized by the reaction of 4 with one molar equivalent of benzyl alcohol in tetrahydrofuran solution ( for 6) or by treatment of 3 with one molar equivalent of ZnEt2 in tetrahydrofuran solution followed by the addition of one molar equivalent of benzyl alcohol ( for 7). The molecular structures are reported for compounds 6 and 7. Their catalytic activities toward the ring opening polymerization reactions are under investigation.
ISSN: 1477-9226
DOI: 10.1039/b705398c
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