Synthesis and characterization of a novel nano-Fe3O4-copoly[(styrene/acrylic acid)/grafted ethylene oxide and its application as a magnetic and recyclable phase-transfer catalyst in the preparation of β-azido alcohols and β-nitro alcohols
作者:Ali Reza Kiasat、Mina Daei、Seyyed Jafar Saghanezhad
DOI:10.1007/s11164-015-2043-0
日期:2016.2
A facile method was developed for the synthesis of β-azido alcohols and β-nitro alcohols in the presence of a novel nano-Fe3O4-copoly[(styrene/acrylic acid)/grafted ethylene oxide (nano-Fe3O4-PS-Co-[PAA-g-PEG]) as a phase-transfer catalyst in water. The catalyst was characterized with IR, SEM, and TGA. This procedure offers several advantages, including excellent regioselectivity, high yields, short reaction times, a recyclable catalyst, easy separation of the catalyst through an external magnet, and easy workup .
在新型纳米氧化铁-聚[(苯乙烯/丙烯酸)/接枝环氧乙烷(nano-Fe3O4-PS-Co-[PAA-g-PEG])作为相转移催化剂存在下,开发了一种在水中合成β-叠氮醇和β-硝基醇的简便方法。该催化剂通过红外光谱、扫描电镜和热重分析进行了表征。该方法具有多个优点,包括极佳的区域选择性、产率高、反应时间短、催化剂可回收利用、催化剂易于通过外部磁铁分离以及易于加工。