Deprotection of Acetals and Silyl Ethers Using a Polymer-Supported π-Acid Catalyst: Chemoselectivity and Polymer Effect
作者:Nobuyuki Tanaka、Yukio Masaki
DOI:10.1055/s-1999-3000
日期:1999.12
A polymeric dicyanoketene acetal (DCKA), prepared from a styrene monomer bearing dicyanoketene acetal functionality, was found to be an effective and recyclable catalyst in the chemoselective deprotection of acetals and silyl ethers. A remarkable acceleration accountable for the polymer effect was observed.
一种由带有二氰基乙烯酮缩醛功能的苯乙烯单体制备的聚合型二氰基乙烯酮缩醛(DCKA),被发现是一种有效且可回收利用的催化剂,用于乙缩醛和硅醚的选择性脱保护反应。实验观察到由于聚合物效应引起的显著加速现象。