Cycloaddition reaction offers an ideal and powerful method for the construction of cyclic structures with molecular complexity and diversity. The exploration of versatile synthons, especially in situ formed species, for the assembly of poly-functionalized heterocycles in one-pot is an intriguing and challenging area in synthetic chemistry from the perspective of atom economy and bond formation efficiency. Herein, we report an asymmetric formal [1 + 2 + 2]-cycloaddition of readily accessible diazoamides with enamines and carbonyl compounds. This cascade reaction involves a 1,3-dipolar cycloaddition of ketones/aldehydes with the key zwitterionic intermediate that generated in situ through an intermolecular metal carbene transfer to nucleophilic enamines, which offers a direct access to spiro-tetrahydrofurans containing four consecutive stereocenters in high yields and excellent enantioselectivity through chiral copper complex or chiral dirhodium carboxylates catalysis. Cycloaddition reaction offers an ideal and powerful method for the construction of cyclic structures with molecular complexity and diversity. Herein, the authors report an asymmetric formal [1 + 2 + 2]-cycloaddition of diazoamides with enamines and carbonyl compounds, synthesizing spiro-tetrahydrofurans containing four consecutive stereocenters.
Asymmetric formal [1 + 2 + 2]-cycloaddition of diazoamides with enamines and carbonyl compounds
Shanliang Dong,Minghan Yao,Yunzhe Wang,Xiongda Xie,Xinyu Jiang,Xinfang Xu
Published 2025 in Nature Communications
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- Publication year
2025
- Venue
Nature Communications
- Publication date
2025-11-27
- Fields of study
Medicine, Chemistry
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Semantic Scholar, PubMed
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