Journal
ORGANIC CHEMISTRY FRONTIERS
Volume 9, Issue 19, Pages 5358-5382Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2qo00698g
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Funding
- Russian Science Foundation [22-23-00289]
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This review summarizes the advancements made in [4 + 1]-annulation reactions involving sulfonium, sulfoxonium, and ammonium ylides, as well as diazo compounds and carbenes over the past six years. The newly emerged methods for generating A(4)-synthons, such as radical, transition metal-catalyzed, and photo-redox processes, are outlined. Specific focus is given to the progress in asymmetric [4 + 1]-annulations using organocatalysis and chiral ammonium ylides.
In this review, the advances made over the last 6 years in [4 + 1]-annulation reactions involving sulfonium, sulfoxonium and ammonium ylides, as well as diazo compounds and carbenes are summarized. The newly emerged methods for generating A(4)-synthons, such as radical, transition metal-catalyzed and photo-redox processes, are outlined. A specific focus is given on the progress in asymmetric [4 + 1]-annulations using organocatalysis and chiral ammonium ylides.
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