| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a zinc-containing dendrimer as a Lewis acid catalyst having a zinc-oxygen bond at the core of the dendrimer. <P>SOLUTION: The zinc-containing dendrimer is represented by the general formula (I) äwherein, E is a bivalent linkage group consisting of a carbonyl or bivalent hydrocarbon group; j is 0 or 1; among a, b and c, at least one is 1, the rest being 0; G is a group of the general formula(II) [wherein, R<SP>1</SP>, R<SP>2</SP>and R<SP>3</SP>are each a bivalent hydrocarbon group; X is a hydrocarbon group; Y and Z are each a bivalent linkage group consisting of O, S, NQ (Q is H or an alkyl), SO, SO<SB>2</SB>, an ester group, amido or carbonyl; p, q, r, s and t are each 0 or 1; m is an integer of ≥1; and among d, e and f, at least two are each 1, the rest being 0]}. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
