申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP2311888A1
公开(公告)日:2011-04-20
Provided is a method of deprotecting a protected polymer, the method being capable of, in the deprotection reaction of a polymer comprising a unit structure having a phenolic hydroxyl group protected with an acyl group, deacylating the polymer in a short period of time while maintaining the other structure, and being capable of taking out the deacylated polymer while highly suppressing contamination of the deacylated polymer with a substance other than the polymer taking part in the reaction. More specifically, provided is a method of deprotecting a protected polymer comprising at least a step of dissolving in an organic solvent the protected polymer comprising at least a unit structure having a phenolic hydroxyl group protected with an acyl group and a deprotecting reagent selected from primary or secondary amine compounds each having a ClogP value of 1.00 or less with the proviso that in the secondary amine compound, neither of the two carbon atoms coupled to the nitrogen atom of the amino group is tertiary. The primary or secondary amine compounds are each represented preferably by HNR-2-nR2n (1) .
本发明提供了一种对受保护聚合物进行脱保护的方法,该方法能够在对包含具有被酰基保护的酚羟基的单元结构的聚合物进行脱保护反应时,在短时间内对聚合物进行脱酰基处理,同时保持其他结构,并且能够取出脱酰基聚合物,同时高度抑制脱酰基聚合物受到参与反应的聚合物以外的物质的污染。更具体地说,本发明提供了一种对受保护聚合物进行脱保护的方法,该方法至少包括以下步骤:将受保护聚合物溶解在有机溶剂中,该受保护聚合物至少包括一个具有被酰基保护的酚羟基的单元结构和一种脱保护试剂,该脱保护试剂选自 ClogP 值为 1.00 或更低的伯胺或仲胺化合物,但在仲胺化合物中,与氨基的氮原子相连的两个碳原子都不是叔碳原子。伯胺或仲胺化合物最好分别用 HNR-2-nR2n (1) 表示。