Radical Benzylation of Quinones via C–H Abstraction

Radical Benzylation of Quinones via C–H Abstraction
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通过 C–H 抽象对醌进行自由基苯甲基化

DOI:
10.1021/acs.joc.9b01004
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发表时间:
2019
期刊:
The Journal of Organic Chemistry
影响因子:
--
通讯作者:
Baxter, Ryan D.
Baxter, Ryan D.
中科院分区:
--
文献类型:
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作者:
Galloway, Jordan D.;Mai, Duy N.;Baxter, Ryan D.

文献摘要

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在此,我们报告的发展自由基苄基化反应的醌使用Selectfluor和催化Ag(I)引发剂。据信该反应在Ag(I)介导的Selectfluor还原后通过C-H提取机制进行。该反应在温和的条件下发生,并且对各种醌和带有伯苄基碳的自由基前体有效。使用预制的Ag(4-OMePy)2NO 3作为催化剂被证明通过减少Selectfluor可用的不需要的降解途径而有效地提高了反应效率。
Herein we report the development of radical benzylation reactions of quinones using Selectfluor and catalytic Ag(I) initiators. The reaction is believed to proceed via a C–H abstraction mechanism after Ag(I)-mediated reduction of Selectfluor. This reaction occurs under mild conditions and is effective for a variety of quinones and radical precursors bearing primary benzylic carbons. The use of preformed Ag(4-OMePy)2NO3as a catalyst proved effective in improving the reaction efficiency by reducing unwanted degradation pathways available to Selectfluor.