作者:Alan Armstrong、Ghafoor Ahmed、Ian Garnett、Katell Goacolou、J.Steven Wailes
DOI:10.1016/s0040-4020(99)00014-9
日期:1999.2
Exocyclic iminium salts are evaluated as catalysts for alkene epoxidation by Oxone®, presumed to proceed via the corresponding oxaziridinium species. Iminium triflate salts derived from pyrrolidine and electron poor aromatic aldehydes were found to be good catalysts. Attempts to prepare chiral variants of these iminium salts were largely unsuccessful, presumably due to their ready hydrolysis.
外环亚胺盐被Oxone ?评估为烯烃环氧化的催化剂,推测是通过相应的oxaziridinium物种进行的。发现衍生自吡咯烷和贫电子的芳族醛的三氟甲磺酸铵盐是良好的催化剂。制备这些亚胺盐的手性变体的尝试在很大程度上没有成功,大概是由于它们易于水解。