作者:Katherine M. Partridge、Ilia A. Guzei、Tehshik P. Yoon
DOI:10.1002/anie.200905801
日期:2010.1.25
Dipoles apart: Unusual 1,3‐dipolar carbonyl imines are generated in the presence of a bulky scandium(III) catalyst by undergoing a Lewis acid catalyzed rearrangement of N‐sulfonyl oxaziridines. The 1,3‐dipolar carbonyl imines then undergo subsequent cycloaddition with a variety of dipolarophiles. tmbox=2,2′‐isopropylidenebis(4,4‐dimethyl‐2‐oxazoline).
偶极子分开:在大体积钪 (III) 催化剂存在下,通过路易斯酸催化的N-磺酰基氧氮杂环丙烷重排,生成不寻常的 1,3-偶极羰基亚胺。1,3-偶极羰基亚胺随后与多种亲偶极体发生环加成反应。tmbox=2,2'-异亚丙基双(4,4-二甲基-2-恶唑啉)。