東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Main Group-Catalyzed Carbon to Carbo...

Bagdasarian, Alex Levon.

FindBook

Google Book

Amazon

博客來

Main Group-Catalyzed Carbon to Carbon Bond-Forming Reactions of Dicoordinate Carbocations.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Main Group-Catalyzed Carbon to Carbon Bond-Forming Reactions of Dicoordinate Carbocations./
作者:	Bagdasarian, Alex Levon.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	335 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-08, Section: B.
Contained By:	Dissertations Abstracts International81-08B.
標題:	Organic chemistry. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27670212
ISBN:	9781392750896

Main Group-Catalyzed Carbon to Carbon Bond-Forming Reactions of Dicoordinate Carbocations.
Bagdasarian, Alex Levon.

Main Group-Catalyzed Carbon to Carbon Bond-Forming Reactions of Dicoordinate Carbocations. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 335 p.

Source: Dissertations Abstracts International, Volume: 81-08, Section: B.

Thesis (Ph.D.)--University of California, Los Angeles, 2019.

This item is not available from ProQuest Dissertations & Theses.

This dissertation focuses on the development of catalytic Carbon to Carbon (C-C) bond forming reactions of dicoordinate carbocations. The unique reactivity described herein focuses on the use of ionizable groups and appropriate counter anions to facilitate productive reactions of high-energy cationic intermediates. The first chapter discusses the exploration of phenyl carbocations, generated from aryl fluorides under silylium-weakly coordinating anion (WCA) catalysis, in the context of hydrocarbon functionalization. Chapter two describes the discovery of C-H insertion and reductive Friedel-Crafts reactions of vinyl carbocations generated from vinyl triflates and silylium-WCA salts. Chapter three describes a novel approach to generating vinyl cations using Lithium Lewis acids. Interestingly, these vinyl carbocations are formed under basic conditions, with lithium hexamethyldisilazide (LiHMDS) as the Lewis acid precursor. Chapter four describes two new catalytic manifolds using urea-based organocatalysts. In one instance, the urea catalyst directly ionizes the vinyl triflate through a hydrogen-bonding interaction to promote intra molecular C-H insertion reactions. In another case, urea organocatalysts combined with LiHMDS, result in novel lithium-urea catalyst that promote Friedel-Crafts reactions of vinyl triflates. In summary, these studies have resulted in the development of new catalytic methods using main-group catalysis for the formation of C-C bonds.

ISBN: 9781392750896Subjects--Topical Terms:

523952
Organic chemistry.
Subjects--Index Terms:

Carbon to carbon bonds

Main Group-Catalyzed Carbon to Carbon Bond-Forming Reactions of Dicoordinate Carbocations.
LDR:02729nmm a2200373 4500 001 2279673
005 20210823083415.5
008 220723s2019 ||||||||||||||||| ||eng d
020 $a 9781392750896
035 $a (MiAaPQ)AAI27670212
035 $a AAI27670212
040 $a MiAaPQ $c MiAaPQ
100 1 $a Bagdasarian, Alex Levon. $3 3558143
245 1 0 $a Main Group-Catalyzed Carbon to Carbon Bond-Forming Reactions of Dicoordinate Carbocations.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 335 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-08, Section: B.
500 $a Advisor: Nelson, Hosea Martin.
502 $a Thesis (Ph.D.)--University of California, Los Angeles, 2019.
506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
520 $a This dissertation focuses on the development of catalytic Carbon to Carbon (C-C) bond forming reactions of dicoordinate carbocations. The unique reactivity described herein focuses on the use of ionizable groups and appropriate counter anions to facilitate productive reactions of high-energy cationic intermediates. The first chapter discusses the exploration of phenyl carbocations, generated from aryl fluorides under silylium-weakly coordinating anion (WCA) catalysis, in the context of hydrocarbon functionalization. Chapter two describes the discovery of C-H insertion and reductive Friedel-Crafts reactions of vinyl carbocations generated from vinyl triflates and silylium-WCA salts. Chapter three describes a novel approach to generating vinyl cations using Lithium Lewis acids. Interestingly, these vinyl carbocations are formed under basic conditions, with lithium hexamethyldisilazide (LiHMDS) as the Lewis acid precursor. Chapter four describes two new catalytic manifolds using urea-based organocatalysts. In one instance, the urea catalyst directly ionizes the vinyl triflate through a hydrogen-bonding interaction to promote intra molecular C-H insertion reactions. In another case, urea organocatalysts combined with LiHMDS, result in novel lithium-urea catalyst that promote Friedel-Crafts reactions of vinyl triflates. In summary, these studies have resulted in the development of new catalytic methods using main-group catalysis for the formation of C-C bonds.
590 $a School code: 0031.
650 4 $a Organic chemistry. $3 523952
650 4 $a Chemistry. $3 516420
650 4 $a Molecular chemistry. $3 1071612
653 $a Carbon to carbon bonds
653 $a C-C bonds
653 $a Carbocations
653 $a Weakly coordinating anion
690 $a 0490
690 $a 0431
690 $a 0485
710 2 $a University of California, Los Angeles. $b Chemistry 0153. $3 2096181
773 0 $t Dissertations Abstracts International $g 81-08B.
790 $a 0031
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27670212