자료유형  

 학위논문

Control Number  

0017160106

International Standard Book Number  

9798384048510

Dewey Decimal Classification Number  

540

Main Entry-Personal Name  

George, Gregory.

Publication, Distribution, etc. (Imprint  

[S.l.] : Cornell University., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

202 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-03, Section: B.

General Note  

Advisor: Wolczanski, Peter.

Dissertation Note  

Thesis (Ph.D.)--Cornell University, 2024.

Summary, Etc.  

요약Olefin metathesis is a class of reactions utilized in the fine-chemical and commodities industries. Homogenous catalysis of olefin metathesis can be performed by metal alkylidene species, and these compounds have been investigated for decades. In recent years, a focus has been placed on the development of catalysts using metals with lower toxicity and cost when compared to original systems utilizing ruthenium and molybdenum.The purpose of this work is to explore alternative routes towards the generation of metal alkylidene species with the goal of synthesizing first-row transition metal alkylidenes. To achieve this goal, pursuit of novel routes to generation masked alkylidenes was undertaken and new reactive small molecules were considered for use as alkylidene precursors.The study began with the synthesis of a library of PNP chelates of iron featuring various halide and alkyl ligands. The generation of masked alkylidene species through the utilization of a pendant amine group was unsuccessfully targeted by a variety of synthetic routes. [1.1.1]propellane was identified as a carbene precursor capable of generating stable metal alkylidene species with ruthenium, osmium, and vanadium. The reactivity of [1.1.1]propellane was investigated for a wide array of organometallic species and the scope was widened to include other propellane species, namely 1,3-dehydroadamantane. Efforts towards the synthesis of reduced titanium species with the goal of reaction with [1.1.1]propellane led to the identification of a number of interesting complexes and their reactivity was investigated in the final expansion of this work.

Subject Added Entry-Topical Term  

Chemistry.

Subject Added Entry-Topical Term  

Inorganic chemistry.

Subject Added Entry-Topical Term  

Organic chemistry.

Index Term-Uncontrolled  

Olefin metathesis

Index Term-Uncontrolled  

Propellane

Index Term-Uncontrolled  

Homogenous catalysis

Added Entry-Corporate Name  

Cornell University Chemistry and Chemical Biology

Host Item Entry  

Dissertations Abstracts International. 86-03B.

Electronic Location and Access  

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Control Number  

joongbu:658122