Volume 42, Issue 12 pp. 1399-1406
Concise Report

Stereospecific Assembly of Trisubstituted Alkenes via Photoinduced Nitrogen-Centered Radical-Triggered C—C Bond Cleavage/Functionalization of Oxime Esters

Yu Bao

Yu Bao

School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164 China

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Zhi-Jie Song

Zhi-Jie Song

School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164 China

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Jin-Long Dai

Jin-Long Dai

School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164 China

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Shenghu Yan

Shenghu Yan

School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164 China

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Yue Zhang

Corresponding Author

Yue Zhang

School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164 China

E-mail: [email protected]; [email protected]Search for more papers by this author
Jia-Yin Wang

Corresponding Author

Jia-Yin Wang

School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164 China

E-mail: [email protected]; [email protected]Search for more papers by this author
Guigen Li

Guigen Li

Department of Chemistry and Biochemistry, Texas Tech University, 79409 USA

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First published: 29 February 2024
Citations: 6

Comprehensive Summary

A general and convenient photoredox-catalyzed acylation and alkylcyanation of MBH acetates has been established, enabling the assembly of the C(sp2)–C(sp3) bond by a nitrogen-centered radical strategy for the synthesis of trisubstituted alkenes in moderate to excellent chemical yields (48 examples in total). The reaction of MBH acetates with acyl (indanone) oxime esters afforded trisubstituted alkenes containing 1,4-dicarbonyl groups. Interestingly, the use of Eosin Y as a photocatalyst in the catalytic system resulted in the formation of distal cyano group-anchored trisubstituted alkenes via deconstructive functionalization of cycloketone oxime esters. Notably, these resulting 1,4-dicarbonyl compounds could be applied to late-stage transformations, providing important methods for the synthesis of dihydropyridazin-3(2H)-one.image

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