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Alicyclic and polycyclic compounds s...
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Lis, Edward C., Jr.
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Alicyclic and polycyclic compounds synthesized from tungsten anisole complexes.
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
Alicyclic and polycyclic compounds synthesized from tungsten anisole complexes./
作者:
Lis, Edward C., Jr.
面頁冊數:
360 p.
附註:
Adviser: W. Dean Harman.
Contained By:
Dissertation Abstracts International68-12B.
標題:
Chemistry, Inorganic. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3294802
ISBN:
9780549396260
Alicyclic and polycyclic compounds synthesized from tungsten anisole complexes.
Lis, Edward C., Jr.
Alicyclic and polycyclic compounds synthesized from tungsten anisole complexes.
- 360 p.
Adviser: W. Dean Harman.
Thesis (Ph.D.)--University of Virginia, 2008.
Chapter 1 is a review of eta6 and eta2 coordination of an arene to a transition metal fragment. Coordination to a pi-acidic metal fragment (eta6) primarily focuses on nucleophilic substitutions on arenes activated by the metal fragments Cr(CO) 3, {Mn(CO)3}+, {RuCp}+, {Mo(CO) 3} and {FeCp}+. The sequential addition of a nucleophile then an electrophile to arenes coordinated to {Cr(CO)3} and {Mo(CO) 3} is also discussed. The chemistry of arenes bound to a pi-basic metal fragment (eta2) concentrates on the dearomatization of anisoles activated by {Os(NH3)5}2+ through a series of electrophilic followed by nucleophilic additions. Included is an introduction to the metal fragments {TpRe(CO)(L)} and {TpW(NO)(PMe 3)}.
ISBN: 9780549396260Subjects--Topical Terms:
517253
Chemistry, Inorganic.
Alicyclic and polycyclic compounds synthesized from tungsten anisole complexes.
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Chapter 1 is a review of eta6 and eta2 coordination of an arene to a transition metal fragment. Coordination to a pi-acidic metal fragment (eta6) primarily focuses on nucleophilic substitutions on arenes activated by the metal fragments Cr(CO) 3, {Mn(CO)3}+, {RuCp}+, {Mo(CO) 3} and {FeCp}+. The sequential addition of a nucleophile then an electrophile to arenes coordinated to {Cr(CO)3} and {Mo(CO) 3} is also discussed. The chemistry of arenes bound to a pi-basic metal fragment (eta2) concentrates on the dearomatization of anisoles activated by {Os(NH3)5}2+ through a series of electrophilic followed by nucleophilic additions. Included is an introduction to the metal fragments {TpRe(CO)(L)} and {TpW(NO)(PMe 3)}.
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Chapter 2 focuses on electrophilic additions to anisole and substituted anisoles coordinated to the {TpW(NO)(PMe3)} metal fragment. Electrophiles discussed are benzyl bromide, aldehydes, protons and Michael acceptors. The characterization of the resulting tungsten 4H-anisolium complexes is covered.
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Chapter 3 describes the synthesis of tungsten cyclohexene complexes. A nucleophilic addition to a tungsten hound 2H-anisolium leads to a coordinated tungsten 1,3-cyclohexadiene. Manipulation of the diene complex by tandem electrophilic/nucleophilic additions is reported. The reactivity of tungsten 4H-anisoliums with nucleophiles is also discussed.
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Chapter 4 is a report of an intramolecular aldol ring closure using tungsten 3-methyl anisolium complexes via activation of the benzylic position. A description of the synthesis, characterization of the intermediate complexes, and isolation of the organic tetrahydronaphthalene cores is presented.
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Chapter 5 focuses on the synthesis of chromene cores. A nucleophile reacts at the carbonyl of a tungsten 4H-anisolium complex and the enolate oxygen closes onto C3 of the anisole ring. Elaboration of the coordinated chromenes and isolation of the organic molecules is covered. A tungsten nonenone complex was also synthesized and a description of an N-H insertion into the olefin of this compound is included.
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Chapter 6 involves the synthesis and characterization of eta 2-nitrilium, eta2-ketone, and eta2-cyclopentene complexes. An analysis of the crystal structures of the eta2-nitrillum and eta2-ketone complexes is included, as well as the reactivity associated with the eta2-ketone and eta 2-cyclopentene complexes.
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http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3294802
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