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通过氟阴离子结合催化实现硅基烯酮缩醛的对映选择性酰化。

Enantioselective acylation of silyl ketene acetals through fluoride anion-binding catalysis.

机构信息

Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.

出版信息

J Am Chem Soc. 2011 Sep 7;133(35):13872-5. doi: 10.1021/ja205602j. Epub 2011 Aug 10.

DOI:10.1021/ja205602j
PMID:21800916
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3164931/
Abstract

A highly enantioselective acylation of silyl ketene acetals with acyl fluorides has been developed to generate useful α,α-disubstituted butyrolactone products. This transformation is promoted by a new thiourea catalyst and 4-pyrrolidinopyridine and represents the first example of enantioselective thiourea anion-binding catalysis with fluoride.

摘要

已开发出一种高度对映选择性的硅基烯酮缩醛与酰氟的酰化反应,以生成有用的α,α-二取代丁内酯产物。这种转化由一种新的硫脲催化剂和 4-吡咯吡啶促进,代表了氟阴离子对映选择性硫脲阴离子结合催化的首例实例。

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本文引用的文献

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Angew Chem Int Ed Engl. 2011 Jun 27;50(27):6012-42. doi: 10.1002/anie.201006128.
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Amine, alcohol and phosphine catalysts for acyl transfer reactions.用于酰基转移反应的胺、醇和膦催化剂。
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A dual-catalysis/anion-binding approach to the kinetic resolution of allylic amines.双催化/阴离子结合策略用于烯丙基胺的动力学拆分。
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N-Heterocyclic carbene-catalyzed (4+2) cycloaddition/decarboxylation of silyl dienol ethers with α,β-unsaturated acid fluorides.N-杂环卡宾催化硅基二烯醇醚与α,β-不饱和氟代酸的(4+2)环加成/脱羧反应。
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Chiral 1,2,3-triazoliums as new cationic organic catalysts with anion-recognition ability: application to asymmetric alkylation of oxindoles.手性 1,2,3-三唑𬭩盐作为具有阴离子识别能力的新型阳离子有机催化剂:在手性吲哚啉酮的不对称烷基化反应中的应用。
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A chiral-anion generator: application to catalytic desilylative kinetic resolution of silyl-protected secondary alcohols.一种手性阴离子生成剂:应用于硅基保护仲醇的催化脱硅基动力学拆分
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Merging nucleophilic and hydrogen bonding catalysis: an anion binding approach to the kinetic resolution of propargylic amines.亲核催化与氢键催化的融合:一种阴离子结合策略用于炔丙胺的动力学拆分。
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