Gold-Catalyzed Synthesis of 3-Pyrrolidinones and Nitrones from N-Sulfonyl Hydroxylamines via Oxygen-Transfer Redox and 1,3-Sulfonyl Migration
作者:Hyun-Suk Yeom、Eunsu So、Seunghoon Shin
DOI:10.1002/chem.201002863
日期:2011.2.7
Golden touch: Gold‐catalyzed reaction of N‐sulfonyl hydroxylamines with terminal alkyne led to 3‐pyrrolidinones by means of an oygen‐transfer redox reaction. This protocol constitutes a direct method for forming α‐amino carbonyl compounds. In sharp contrast, those with internal alkynes underwent 1,3‐sulfonyl migration leading to 3‐sulfonyl cyclic nitrones.
金色触摸:金催化反应N-具有由oygen的手段导致3-吡咯烷酮末端炔磺酰羟胺-转移氧化还原反应。该方案构成了形成α-氨基羰基化合物的直接方法。与之形成鲜明对比的是,那些具有内部炔烃的化合物经历了1,3-磺酰基迁移,生成了3-磺酰基环状硝酮。