作者:Laura K. Müller、Tobias Steinbach、Frederik R. Wurm
DOI:10.1039/c5ra07167d
日期:——
A novel cyclic phosphate monomer, 2-(2-(benzyloxy)ethoxy)-1,3,2-dioxaphospholane-2-oxide (BnEEP), was developed to generate poly(phosphoester)s containing protected pendant hydroxyl groups by anionic ring-opening polymerization. The hydroxyl-groups were released by a mild catalytic hydrogenation leaving the polymer backbone intact. In addition, the number of pendant hydroxyl groups was varied by copolymerization
开发了一种新型的环状磷酸酯单体2-(2-(苄氧基)乙氧基)-1,3,2-二氧杂磷杂环戊烷-2-氧化物(BnEEP),可通过阴离子环-生成含受保护侧链羟基的聚磷酸酯。开放聚合。通过温和的催化氢化释放羟基,使聚合物主链保持完整。另外,通过BnEEP与乙基乙基磷酸酯(EEP)的共聚来改变侧链羟基的数目。此外,BnEEP与乙缩醛保护的环状磷酸酯2-(2,2-二甲基-1,3-二氧戊环-4-基-甲氧基)-2-oxo-1,3,2-二氧杂磷烷(GEP)的共聚物为为了分别通过酸性水解或催化氢化来建立缩醛或苄基保护基的选择性脱保护基而制备。在报道的条件下未检测到聚酯主链的降解。该新型单体允许调节聚(磷酸酯)的化学和物理性质,并获得各种侧链官能度。