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手性2-酰胺基和1-苯基-2-酰胺基二烯在狄尔斯-阿尔德反应中用于合成手性环酮的合成与应用

Synthesis and Application of Chiral 2-Amido and 1-Phenyl-2-amido Dienes in Diels-Alder Reactions to Access Chiral Cyclic Ketones.

作者信息

Connor Aoibheann O', O'Broin Calvin Q, Bruno-Colmenarez Julia, Guiry Patrick J

机构信息

Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.

出版信息

J Org Chem. 2024 Nov 15;89(22):16325-16339. doi: 10.1021/acs.joc.4c00689. Epub 2024 Nov 5.

DOI:10.1021/acs.joc.4c00689
PMID:39499868
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11574853/
Abstract

The preparation of a focused library of chiral 2-amido and 2-amido-1-phenyl-1,3-dienes from a range of chiral oxazolidinones using palladium-catalysis is reported. This palladium-catalyzed carbon-nitrogen bond-forming reaction provides the corresponding chiral amido-dienes in moderate to excellent yields (12 examples, up to 97%). The resulting chiral amido-dienes are employed as novel dienes in Diels-Alder (DA) reactions (58 examples, up to 93:7 dr, up to 70% yield). A range of chiral cyclic ketones were accessed upon hydrolysis, affording products with high levels of enantioselectivity (up to 92% ee, up to 81% yield).

摘要

报道了使用钯催化从一系列手性恶唑烷酮制备手性2-酰胺基和2-酰胺基-1-苯基-1,3-二烯的聚焦文库。这种钯催化的碳氮键形成反应以中等到优异的产率提供相应的手性酰胺基二烯(12个例子,高达97%)。所得的手性酰胺基二烯在狄尔斯-阿尔德(DA)反应中用作新型二烯(58个例子,高达93:7的非对映选择性,高达70%的产率)。通过水解获得了一系列手性环状酮,得到了具有高对映选择性的产物(高达92% ee,高达81%的产率)。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f8/11574853/231caa4ab316/jo4c00689_0014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f8/11574853/07be2c599150/jo4c00689_0006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f8/11574853/0dce11fcba2b/jo4c00689_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f8/11574853/7498d3a06aee/jo4c00689_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f8/11574853/0c7bf43c648a/jo4c00689_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f8/11574853/48cb2095810e/jo4c00689_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f8/11574853/35baffb2003b/jo4c00689_0003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a9f8/11574853/231caa4ab316/jo4c00689_0014.jpg

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