文献类型：专利

英文题名：New asymmetric multi-tooth amido monophenol oxygen radical ligand and its metal zinc complex compound used for catalyzing lactone comprising epsilon-caprolactone, and lactide ring opening of homopolymerization or copolymerization

作者：MA H;ZHANG X;SONG S

机构：[1]UNIV EAST CHINA SCI&TECHNOLOGY

申请号：CN102060718-A

申请日：2010-11-30

公开日：2011-05-18

语种：英文

收录：DERWENT

摘要：NOVELTY - Asymmetric multi-tooth amido monophenol oxygen radical ligand (I) and its metal zinc complex compound (II) are new. USE - Zinc complex compound containing multi-tooth amido monophenol oxygen radical used for catalyzing lactone comprising epsilon -caprolactone, and lactide ring opening of homopolymerization or copolymerization (claimed). ADVANTAGE - The compound can be prepared using easily obtained raw materials, has stable property, and high catalytic activity. The method has simple synthesizing route and easy separation and purification. The catalyzed lactone has higher molecular weight, and can satisfy requirement of industrial department. DETAILED DESCRIPTION - Asymmetric multi-tooth amido monophenol oxygen radical ligand of formula (I) and its metal zinc complex compound of formula (II) are new. R1-R4 = H, 1-20C optionally branched or ring structured alkyl, hydrocarbon, and halo, preferably H, Me, t-butyl, cumyl, trityl, and halo; X1 = 1-20C optionally branched or ring structured hydrocarbon, and halo, preferably methoxy and F; R5 = ethylidene or propylidene; X2 = n-ethylethanamine if R5 is ethylidene and dimethylaniline when R5 is propylidene;and R6 = 1-4C alkyl, dimethyl/trimethylsilyl amido, or group of formula (III). R7 = 1-4C optionally branched or ring structured alkoxy;and R8, R9 = H, 1-12C optionally branched or ring structured alkyl, and halo. An INDEPENDENT CLAIM is included for preparation of compounds (I) and (II).