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Development of Catalyst Systems for Regio and Enantioselective Transformations of Amine and Ether C−H Bonds.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Development of Catalyst Systems for Regio and Enantioselective Transformations of Amine and Ether C−H Bonds./
作者:	Yesilcimen, Ahmet Selman.
面頁冊數:	1 online resource (724 pages)
附註:	Source: Dissertations Abstracts International, Volume: 83-12, Section: B.
Contained By:	Dissertations Abstracts International83-12B.
標題:	Organic chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29165591click for full text (PQDT)
ISBN:	9798438795339

Development of Catalyst Systems for Regio and Enantioselective Transformations of Amine and Ether C−H Bonds.
Yesilcimen, Ahmet Selman.

Development of Catalyst Systems for Regio and Enantioselective Transformations of Amine and Ether C−H Bonds. - 1 online resource (724 pages)

Source: Dissertations Abstracts International, Volume: 83-12, Section: B.

Thesis (Ph.D.)--Boston College, 2022.

Includes bibliographical references

This dissertation describes the development of novel catalyst systems that could promote the regio- and enantioselective transformations of C-H bonds contained in N-alkylamines and ethers through Lewis acid-mediated hydride abstraction processes. The progress made in C-H functionalization of N-alkylamines and ethers that served as the intellectual foundation of this dissertation research are summarized in Chapter 1. Despite notable advances, the development of broadly applicable, enantioselective, and catalytic protocols to functionalize C-H bonds in N-alkylamines and ethers with high regio- and stereo-selectivity was regarded as an unsolved problem when we started this dissertation research. In an effort to overcome these fundamental limitations, we first identified a B(C6F5)3/Cu-PyBOX cooperative catalyst system for the enantioselective conversion of a-amino C-H bonds through the generation of an iminium by (F5C6)3B-catalyzed hydride abstraction process (Chapter 2). We then envisioned that in situ generated iminium ions could be further deprotonated to furnish an enamine intermediate, which may react with electrophilic species for a-amino C-H functionalization. The design and development of such a catalyst system were discussed in Chapter 3. Finally, we disclose enantioselective Cu-BOX-catalyzed hetero Diels-Alder reactions of enol ethers generated through Ph3C+-mediated oxidation of alkyl ethers. (Chapter 4).

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798438795339Subjects--Topical Terms:

523952
Organic chemistry.
Subjects--Index Terms:

C-H functionalizationIndex Terms--Genre/Form:

542853
Electronic books.

Development of Catalyst Systems for Regio and Enantioselective Transformations of Amine and Ether C−H Bonds.
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520 $a This dissertation describes the development of novel catalyst systems that could promote the regio- and enantioselective transformations of C-H bonds contained in N-alkylamines and ethers through Lewis acid-mediated hydride abstraction processes. The progress made in C-H functionalization of N-alkylamines and ethers that served as the intellectual foundation of this dissertation research are summarized in Chapter 1. Despite notable advances, the development of broadly applicable, enantioselective, and catalytic protocols to functionalize C-H bonds in N-alkylamines and ethers with high regio- and stereo-selectivity was regarded as an unsolved problem when we started this dissertation research. In an effort to overcome these fundamental limitations, we first identified a B(C6F5)3/Cu-PyBOX cooperative catalyst system for the enantioselective conversion of a-amino C-H bonds through the generation of an iminium by (F5C6)3B-catalyzed hydride abstraction process (Chapter 2). We then envisioned that in situ generated iminium ions could be further deprotonated to furnish an enamine intermediate, which may react with electrophilic species for a-amino C-H functionalization. The design and development of such a catalyst system were discussed in Chapter 3. Finally, we disclose enantioselective Cu-BOX-catalyzed hetero Diels-Alder reactions of enol ethers generated through Ph3C+-mediated oxidation of alkyl ethers. (Chapter 4).
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