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New Developments of the Principle of Vinylogy as Applied to π-Extended Enolate-Type Donor Systems.
Chemical Reviews ( IF 51.4 ) Pub Date : 2020-02-10 , DOI: 10.1021/acs.chemrev.9b00481
Claudio Curti 1 , Lucia Battistini 1 , Andrea Sartori 1 , Franca Zanardi 1
Affiliation  

The principle of vinylogy states that the electronic effects of a functional group in a molecule are possibly transmitted to a distal position through interposed conjugated multiple bonds. As an emblematic case, the nucleophilic character of a π-extended enolate-type chain system may be relayed from the legitimate α-site to the vinylogous γ, ε, ..., ω remote carbon sites along the chain, provided that suitable HOMO-raising strategies are adopted to transform the unsaturated pronucleophilic precursors into the reactive polyenolate species. On the other hand, when "unnatural" carbonyl ipso-sites are activated as nucleophiles (umpolung), vinylogation extends the nucleophilic character to "unnatural" β, δ, ... remote sites. Merging the principle of vinylogy with activation modalities and concepts such as iminium ion/enamine organocatalysis, NHC-organocatalysis, cooperative organo/metal catalysis, bifunctional organocatalysis, dicyanoalkylidene activation, and organocascade reactions represents an impressive step forward for all vinylogous transformations. This review article celebrates this evolutionary progress, by collecting, comparing, and critically describing the achievements made over the nine year period 2010-2018, in the generation of vinylogous enolate-type donor substrates and their use in chemical synthesis.

中文翻译:


Vinylogy原理在π-扩展烯醇式供体系统中的应用的新进展。



乙烯基学的原理指出,分子中官能团的电子效应可能通过插入的共轭多重键传递到远端位置。作为一个象征性的例子,π-延伸烯醇型链系统的亲核特性可以从合法的 α 位点传递到链上的插烯 γ、ε、...、ω 远程碳位点,前提是合适的 HOMO采用提高策略将不饱和亲核前体转化为反应性多烯醇化物。另一方面,当“非自然”羰基内位点被激活为亲核试剂(umpolung)时,乙烯基化将亲核特性扩展到“非自然”β、δ、...远程位点。将乙烯学原理与亚胺离子/烯胺有机催化、NHC-有机催化、协同有机/金属催化、双功能有机催化、二氰基亚烷基活化和有机级联反应等活化方式和概念相结合,代表着所有乙烯化转化向前迈出了令人印象深刻的一步。这篇综述文章通过收集、比较和批判性地描述 2010-2018 年九年间在插烯烯醇型供体底物的生成及其在化学合成中的应用方面取得的成就来庆祝这一进化进展。
更新日期:2020-02-11
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