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Radical Cation Diels--Alder Cycloadd...

Lin, Shishi.

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Radical Cation Diels--Alder Cycloaddition Reactions By Visible Light Photocatalysis.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Radical Cation Diels--Alder Cycloaddition Reactions By Visible Light Photocatalysis./
作者:	Lin, Shishi.
面頁冊數:	261 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-06(E), Section: B.
Contained By:	Dissertation Abstracts International76-06B(E).
標題:	Organic chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3680602
ISBN:	9781321526790

Radical Cation Diels--Alder Cycloaddition Reactions By Visible Light Photocatalysis.
Lin, Shishi.

Radical Cation Diels--Alder Cycloaddition Reactions By Visible Light Photocatalysis. - 261 p.

Source: Dissertation Abstracts International, Volume: 76-06(E), Section: B.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2015.

Electronically mismatched Diels-Alder reactions have always been a challenge to perform under mild conditions, since conventional Diels-Alder cycloadditions typically involve an electron deficient dienophile and an electron rich diene. Given the synthetic utility of electronically mismatched Diels-Alder cycloadducts, which are ubiquitously found in numerous biologically useful natural products, the research herein describes an efficient way to synthesize these cycloadducts via visible light photocatalysis. Using ruthenium polypyridyl complexes as photocatalysts, mechanistically distinct pathways for the intra- as well as intermolecular cycloaddition reactions have been developed. Our understanding of the reaction systems enabled the design of a cleavable redox auxilliary that allows efficient access to simple unfunctionalized cyclohexene adducts. The synthetic utility of the method has been illustrated in the first reported biomimetic synthesis of the natural product heitziamide A. As such, this novel methodology enables easy access towards synthetically useful cycloadducts which would otherwise be difficult or impossible.

ISBN: 9781321526790Subjects--Topical Terms:

523952
Organic chemistry.

Radical Cation Diels--Alder Cycloaddition Reactions By Visible Light Photocatalysis.
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520 $a Electronically mismatched Diels-Alder reactions have always been a challenge to perform under mild conditions, since conventional Diels-Alder cycloadditions typically involve an electron deficient dienophile and an electron rich diene. Given the synthetic utility of electronically mismatched Diels-Alder cycloadducts, which are ubiquitously found in numerous biologically useful natural products, the research herein describes an efficient way to synthesize these cycloadducts via visible light photocatalysis. Using ruthenium polypyridyl complexes as photocatalysts, mechanistically distinct pathways for the intra- as well as intermolecular cycloaddition reactions have been developed. Our understanding of the reaction systems enabled the design of a cleavable redox auxilliary that allows efficient access to simple unfunctionalized cyclohexene adducts. The synthetic utility of the method has been illustrated in the first reported biomimetic synthesis of the natural product heitziamide A. As such, this novel methodology enables easy access towards synthetically useful cycloadducts which would otherwise be difficult or impossible.
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