A reactive compound represented by the following formula (I):
[In the formula (I), Z represents a divalent group. A plurality of Y may be the same or different, and represent a monovalent boronate residue having at least one hydroxyl group, Ar
1
and Ar
2
may be the same or different, and represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group.].
由以下公式(I)表示的一种反应性化合物:
[在公式(I)中,Z代表二价基团。多个Y可以相同也可以不同,并表示至少有一个羟基的一价
硼酸酯残基,Ar1和Ar2可以相同也可以不同,并表示三价
芳香烃基团或三价杂环基团。]。