Regioselective catalytic asymmetric N-alkylation of isoxazol-5-ones with para-quinone methides
Literature Information
Suo-Suo Qi, Zhen-Hui Jiang, Ming-Ming Chu, Yi-Feng Wang, Xue-Yang Chen, Wan-Zhen Ju, Dan-Qian Xu
A highly regioselective and enantioselective N-alkylation of isoxazol-5-ones with para-quinone methides promoted by bi-functional squaramide catalysts was developed. This unexpected asymmetric N-addition of isoxazolinones afforded a series of enantioenriched N-diarylmethane substituted isoxazolinones with high yields and enantioselectivities (up to 97ā:ā3 er). This reaction not only provides a useful approach for intermolecular chiral CāN bond formation but also demonstrates the immense potential of isoxazol-5-ones as N-nucleophiles in catalytic asymmetric reactions.
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Organic & Biomolecular Chemistry

Organic & Biomolecular Chemistry (OBC) publishes original and high impact research and reviews in organic chemistry. We welcome research that shows new or significantly improved protocols or methodologies in total synthesis, synthetic methodology or physical and theoretical organic chemistry as well as research that shows a significant advance in the organic chemistry or molecular design aspects of chemical biology, catalysis, supramolecular and macromolecular chemistry, theoretical chemistry, mechanism-oriented physical organic chemistry, medicinal chemistry or natural products. Articles published in the journal should report new work which makes a highly-significant impact in the field. Routine and incremental work is generally not suitable for publication in the journal. More details about key areas of our scope are below. In all cases authors should include in their article clear rationale for why their research has been carried out.
![(3R)-4-(4-Chlorophenyl)-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)butanoic acid structure (3R)-4-(4-Chlorophenyl)-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)butanoic acid structure](https://static.chemtradehub.com/structs/218/218608-96-9-f871.webp)



