2020
DOI: 10.1002/ejoc.202001233
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Diastereoselective Synthesis of γ‐Lactones through Reaction of Sulfoxonium Ylides, Aldehydes, and Ketenes: Substrate Scope and Mechanistic Studies

Abstract: In this article, we describe the synthesis of γ‐lactones through the reaction of sulfoxonium ylides, aldehydes, and disubstituted ketenes. The one‐pot sequential method provides access to γ‐lactones from disubstituted ketenes, in moderate to excellent yields, and with good diastereoselectivity favoring the trans‐diastereomer (dr up to 92 : 8). The reaction mechanism was investigated by performing labeling, crossover, and various control experiments. The results of those experiments support the reaction mechani… Show more

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Cited by 4 publications
(2 citation statements)
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“…[28][29][30][31][32][33][34][35][36] Important progress has also been made with regards to metal or carbenefree reactions by exploring the potential nucleophilicity of the sulfoxonium ylides. Some representative examples are the insertion reactions, [37][38][39] a-halogenations, 40 alkylations, 41 cyclizations, [42][43][44][45] ring CH 2 -homologations and epoxide ring opening reactions (Scheme 2H-L). [46][47][48] With respect to the asymmetric transformations, the reactions of the sulfoxonium ylides still lack research compared to the sulfonium ylides.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…[28][29][30][31][32][33][34][35][36] Important progress has also been made with regards to metal or carbenefree reactions by exploring the potential nucleophilicity of the sulfoxonium ylides. Some representative examples are the insertion reactions, [37][38][39] a-halogenations, 40 alkylations, 41 cyclizations, [42][43][44][45] ring CH 2 -homologations and epoxide ring opening reactions (Scheme 2H-L). [46][47][48] With respect to the asymmetric transformations, the reactions of the sulfoxonium ylides still lack research compared to the sulfonium ylides.…”
Section: Introductionmentioning
confidence: 99%
“… 28–36 Important progress has also been made with regards to metal or carbene-free reactions by exploring the potential nucleophilicity of the sulfoxonium ylides. Some representative examples are the insertion reactions, 37–39 α-halogenations, 40 alkylations, 41 cyclizations, 42–45 ring CH 2 -homologations and epoxide ring opening reactions ( Scheme 2H–L ). 46–48 …”
Section: Introductionmentioning
confidence: 99%