Gold‐Catalyzed Synthesis of 3‐Pyrrolidinones and Nitrones from N‐Sulfonyl Hydroxylamines via Oxygen‐Transfer Redox and 1,3‐Sulfonyl Migration

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. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.