ROMPgel-Supported Thiazolium Iodide: An Efficient Supported Organic Catalyst for Parallel Stetter Reactions
作者:Anthony G. M. Barrett、Andrew C. Love、Livio Tedeschi
DOI:10.1021/ol048694u
日期:2004.9.1
[reaction: see text] A high-loading ROMPgel-supported thiazolium iodide was prepared via ROMPolymerization of the corresponding norbornene-derived monomer. The resulting ionic ROMPgel proved to be an efficient organic catalyst for Stetter reactions. The 1,4-dicarbonyl products, important intermediates in the synthesis of cyclopentenones and heterocycles, were obtained in high yields and excellent purities
[反应:见正文]通过相应降冰片烯衍生单体的ROM聚合,制备了高负载ROMPgel负载的碘化噻唑鎓。所得离子型ROMPgel被证明是用于Stetter反应的有效有机催化剂。1,4-二羰基产物是环戊烯酮和杂环化合物合成中的重要中间体,经过最少的纯化,即可获得高收率和优异的纯度。ROMPgel可以重复使用多达四个连续的反应周期,而不会显着降低催化活性。