Organocatalytic stereoselective cationic polymerization of vinyl ethers by employing a confined Br?nsted acid as the catalyst

• 作者: Zan Yang Xun Zhang Yu Jiang Qiang Ma Saihu Liao
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2022,（2）
• 所属期刊栏目: COMMUNICATIONS
• 页码范围: 304-308
• 页数: 5页
• 语种: 英文

摘要

The properties of poly(vinyl ether)s(PVEs)are highly dependent on their tacticity,and the appealing thermoplastics features of isotactic PVEs have drawn considerable efforts to develop stereoselective cationic polymerization methods to access this class of polymers.However,reported methods that could achieve a high degree of tacticity control are limited to process employing metal-based Lewis acids,and with various limitations on catalyst loading,monomer scope,etc.Here,we introduce a metal-free stereoselective cationic polymerization of vinyl ethers by employing a class of chiral confined Br?nsted acids,imidodipho-sphorimidates(IDPis),as the catalyst.This organocatalytic approach features its metal-free conditions,high efficiency,high stereoselectivity,single catalyst system,operation simplicity,etc.