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A C(1)-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones

A C(1)-symmetric N-heterocyclic carbene (NHC)-catalysed activation of isatin-derived enals under oxidative conditions was achieved. The in situ generated α,β-unsaturated acyl azolium species was efficiently trapped by 1,3-dicarbonyl compounds via a Michael addition/spiroannualtion cascade, deliverin...

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Detalles Bibliográficos
Autores principales: Lin, Jun-Bing, Cheng, Xi-Na, Tian, Xiao-Dong, Xu, Guo-Qiang, Luo, Yong-Chun, Xu, Peng-Fei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080099/
https://www.ncbi.nlm.nih.gov/pubmed/35539478
http://dx.doi.org/10.1039/c8ra02009d
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author Lin, Jun-Bing
Cheng, Xi-Na
Tian, Xiao-Dong
Xu, Guo-Qiang
Luo, Yong-Chun
Xu, Peng-Fei
author_facet Lin, Jun-Bing
Cheng, Xi-Na
Tian, Xiao-Dong
Xu, Guo-Qiang
Luo, Yong-Chun
Xu, Peng-Fei
author_sort Lin, Jun-Bing
collection PubMed
description A C(1)-symmetric N-heterocyclic carbene (NHC)-catalysed activation of isatin-derived enals under oxidative conditions was achieved. The in situ generated α,β-unsaturated acyl azolium species was efficiently trapped by 1,3-dicarbonyl compounds via a Michael addition/spiroannualtion cascade, delivering a series of synthetically important spirooxindole δ-lactones with up to 96% enantioselectivity.
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spelling pubmed-90800992022-05-09 A C(1)-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones Lin, Jun-Bing Cheng, Xi-Na Tian, Xiao-Dong Xu, Guo-Qiang Luo, Yong-Chun Xu, Peng-Fei RSC Adv Chemistry A C(1)-symmetric N-heterocyclic carbene (NHC)-catalysed activation of isatin-derived enals under oxidative conditions was achieved. The in situ generated α,β-unsaturated acyl azolium species was efficiently trapped by 1,3-dicarbonyl compounds via a Michael addition/spiroannualtion cascade, delivering a series of synthetically important spirooxindole δ-lactones with up to 96% enantioselectivity. The Royal Society of Chemistry 2018-04-24 /pmc/articles/PMC9080099/ /pubmed/35539478 http://dx.doi.org/10.1039/c8ra02009d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Lin, Jun-Bing
Cheng, Xi-Na
Tian, Xiao-Dong
Xu, Guo-Qiang
Luo, Yong-Chun
Xu, Peng-Fei
A C(1)-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones
title A C(1)-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones
title_full A C(1)-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones
title_fullStr A C(1)-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones
title_full_unstemmed A C(1)-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones
title_short A C(1)-symmetric N-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones
title_sort c(1)-symmetric n-heterocyclic carbene catalysed oxidative spiroannulation of isatin-derived enals: highly enantioselective synthesis of spirooxindole δ-lactones
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080099/
https://www.ncbi.nlm.nih.gov/pubmed/35539478
http://dx.doi.org/10.1039/c8ra02009d
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