Facial selectivity in the cycloaddition of heterodienes to carbohydrate cyclic ketene acetals. A novel synthesis of disaccharide derivatives
作者:Stephen C. Johnson
DOI:10.1039/a800103k
日期:——
Carbohydrate ketene acetals derived from mannopyranose and glucopyranose are shown to serve as electron-rich dienophiles in facially selective, Lewis acid-catalyzed inverse electron demand hetero-Diels–Alder reactions.
Quantitative, Regiospecific, and Stereoselective Radical Ring-Opening Polymerization of Monosaccharide Cyclic Ketene Acetals
作者:Na-Chuan Jiang、Zefeng Zhou、Jia Niu
DOI:10.1021/jacs.3c14244
日期:2024.2.28
Cyclic ketene acetals (CKAs) are among the most well-studied monomers for radical ring-opening polymerization (rROP). However, ring-retaining side reactions and low reactivities in homopolymerization and copolymerization remain significant challenges for the existing CKAs. Here, we report that a class of monosaccharide CKAs can be facilely prepared from a short and scalable synthetic route and can