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Dissertations / Theses on the topic 'Organoboron'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

La, Cascia Enrico. "Selective polyfunctional synthesis through organoboron compounds." Doctoral thesis, Universitat Rovira i Virgili, 2016. http://hdl.handle.net/10803/398028.

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La primera part d’aquesta tesi aborda el tema de la b-boració d’iminas α,β-insaturades per la síntesi de γ-amino alcohols. Es descriu un nou mètode basat en la organocatàlisi, evitand la ultilizació de metalls de transició com catalizadors. En aquest cas el reactiu bis(pinacolat)diboron s’activa amb una base i MeOH generand in situ un bor nucleòfil que interacciona amb el doble enllaç d’imines α,β-insaturades, com sustrat acceptor. La ultilizació de fosfina és necessaria per activar el sustrat. En el cas de que la fosfina és (S)-MeBoPhoz la β-boración es produeix de forma enantioselectiva amb

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2

Hood, David Kent. "The Investigation of Organoboron Compounds and Organoboron/Nitrone Reactions." W&M ScholarWorks, 1991. https://scholarworks.wm.edu/etd/1539625664.

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3

Norbury, A. M. "Novel organoboron chemistry." Thesis, Swansea University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638337.

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The first part of the thesis deals with an investigation into some aspects of the chemistry of di-(2,4,6-triisopropylphenyl)boranes, a novel class of highly hindered organoborones. Chapter one investigates the synthesis of such compounds and discusses the formation of organoboranes in general. Chapter two discusses the chemistry of carbanions, especially those stabilized by an adjacent boron atom. The results of a study of the lithiation of ditripylboranes are reported. It is shown that the compounds are readily lithiated by unhindered bases. Chapters three, four and five report some of the re

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4

Molla, E. "Some sterically hindered organoboron complexes." Thesis, University of Sussex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381590.

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5

Molloy, John James. "Chemoselective reactions of organoboron compounds." Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=29485.

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The Suzuki-Miyaura reaction is a landmark discovery which has revolutionised the field of palladium catalysis. Since its inception, reaction development has not only progressed the range of electrophiles which can be adopted in this transformation but has significantly enhanced the scope of organoboron reagents which can be used, cementing the reaction as the most favoured method for C-C bond formation. Despite these advances, investigation around this key transformation is continuous. A key highlight of this reaction, which is desirable to the synthetic community, is the chemoselectivity show

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6

Entwistle, Christopher Donald. "Conjugated organic and organoboron materials." Thesis, Durham University, 2005. http://etheses.dur.ac.uk/3932/.

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A series of compounds containing one or more dimesitylboryl groups (mesityl = 2,4,6-trimethylphenyl) has been synthesised. Triarylboranes were synthesised by reaction of dimesitylfluoroborane with an appropriate lithium reagent. Dimesitylvinyl boranes were synthesised by the hydroboration of an appropriate terminal alkyne with dimesitylborane. Compounds were characterised by standard analytical techniques, and investigated by single crystal X-ray diffraction, optical, thermal and electrochemical methods. The aim of the research was to determine whether such compounds might be useful in the fie

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7

Kim, Byeongmoon 1957. "Asymmetric organic synthesis using organoboron compounds." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14679.

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8

Nagata, Yuuya. "Synthesis of novel luminescent organoboron polymers." 京都大学 (Kyoto University), 2008. http://hdl.handle.net/2433/136307.

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9

Matsumoto, Fukashi. "Synthesis and functionalization of novel organoboron polymers." 京都大学 (Kyoto University), 2005. http://hdl.handle.net/2433/144938.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第11594号<br>工博第2540号<br>新制||工||1346(附属図書館)<br>23237<br>UT51-2005-D343<br>京都大学大学院工学研究科高分子化学専攻<br>(主査)教授中條善樹, 教授増田俊夫, 教授檜山爲次郎<br>学位規則第4条第1項該当

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10

Hou, D. "Functionalisation of polystyrene using organolithium and organoboron reagents." Thesis, Swansea University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637310.

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The thesis deals with the synthesis and applications of two different types of polystyrene-supported sulfonic acids and bis-(2,4,6, -triisopropylphenyl)boranes (abbreviated to ditripylboranes). Some new methods have been developed by using organolithium reagents. <B>Chapter 1</B> outlines the research project. <B>Chapter 2</B> introduces the synthesis and applications of polymer-supported catalysts and reagents. <B>Chapter 3</B> gives a brief review of the preparation of organolithium reagents and intermediates. <B>Chapter 4</B> discusses the preparation of benzyllithiums in general and report

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11

Jones, Dyfyr Heulyn. "Approaches to quaternary carbon centres using organoboron chemistry." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/50197/.

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The main focus of the work contained within this thesis was to explore the possible use of novel organoboron chemistry in generating quaternary carbon centres, with the ultimate aim of developing new routes for the asymmetric synthesis of chiral quaternary carbon centres. Chapter 1 contains a general introduction to the literature of organoboron chemistry, focusing particularly on organoboron reactions that contain 1, 2 - boron to carbon migrations. Chapters 2 and 3 contain attempts at generating tertiary alkyl groups bonded to boron in an asymmetric fashion. Chapter 2 specifically deals with

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12

Fawcett, Alexander. "New developments in organoboron incorporation, homologation and functionalization." Thesis, University of Bristol, 2018. http://hdl.handle.net/1983/8324d1d5-a85f-465c-adf3-c1bfb6dc3fa3.

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This thesis reports contributions to three branches of organoboron chemistry: boron incorporation, boron homologation, and boron functionalization. Firstly, a decarboxylative borylation reaction has been developed. Carboxylic acids, pre-activated as their corresponding N-hydroxyphthalimide esters, have been found to undergo a decarboxylative borylation process in the presence of bis(catecholato)diboron in N,N-dimethylacetamide solvent under blue LED irradiation to deliver, after transesterification with pinacol, stable and isolable pinacol boronic esters. These simple conditions extended to a

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13

Meng, Yan. "Synthesis of organoboron compounds by difunctionalization of alkenes:." Thesis, Boston College, 2020. http://hdl.handle.net/2345/bc-ir:109010.

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Thesis advisor: James Morken<br>This dissertation details two different alkene difunctionalization strategies that are utilized in the synthesis of three types of organoboron species in racemic and enantioenriched fashion. Chapter one will introduce the carbohydrate and DBU co-catalyzed transition-metal-free enantioselective diboration reactions of unactivated alkenes. Mechanistic insights guided reaction condition design will be discussed. In chapter two, a nickel-catalyzed conjunctive cross-coupling of 9-BBN borane and carboxylic acid derivatives is presented. Its development and detailed me

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14

Eberlin, Ludovic Jean Adolphe. "Novel applications of polyfunctionalised organoboron and nitroso compounds." Thesis, Durham University, 2016. http://etheses.dur.ac.uk/11447/.

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This thesis deals with the reactivity of dienylboronated compounds towards aryl- and carbonylnitroso derivatives. The first part of this focused on the reactivity of dienylboronate compounds with arylnitroso derivatives resulting in pyrrole or furan formation. The outcome and efficiency of the reaction is related to the boron substituents and the solvent used, thus giving pyrroles, boronated oxazines or nitrones. A one-pot strategy was then applied to synthesise oxazoline derivatives using nitrones as key intermediates. Theoretical, as well as experimental, works supported that the formation o

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15

Eberlin, Ludovic. "Novel applications of polyfunctionalised organoboron and nitroso compounds." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S078/document.

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Cette thèse présente la réactivité de diènes polyfonctionnalisés incorporant un atome de bore (diènes borylés) en présence de composés de type nitroso. La première partie est une étude de la réactivité des diènes borylés en présence de dérivés arylnitroso. Le produit formé ainsi que l'efficacité de la réaction est dépendant de la substitution sur l'atome de bore ainsi que du solvant utilisé pour la réaction. Suivant les conditions employées, la formation de composés avec différentes structures; pyrroles, oxazines substitués par un atome de bore, ou nitrones a été obtenue. Une stratégie one-pot

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16

Miyata, Mamoru. "Synthesis of novel organoboron polymers and their applications." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/148876.

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17

Huang, Zeyu. "Synthesis of Multifunctional Organoboron Compounds by Copper-Catalyzed Enantioselective Reactions:." Thesis, Boston College, 2017. http://hdl.handle.net/2345/bc-ir:107346.

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Thesis advisor: Amir H. Hoveyda<br>Chapter 1. We have developed a catalytic method for enantio- and SN2’-selective allylic substitution of commercially available diborylmethane to trisubstituted allylic phosphates (pin = pinacolato). The transformations are catalyzed by NHC–Cu complexes (NHC = N-heterocyclic carbene). Products bearing quaternary stereogenic carbon centers are obtained in up to 86% yield (after oxidation), >98:2 SN2’/SN2 selectivity and 95:5 enantiomeric ratio (e.r.). Chapter 2. We have developed a facile multicomponent catalytic process that begins with a chemo- and site-se

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18

Chierchia, Matteo Paolo. "Metal-Catalyzed Enantioselective Dicarbofunctionalization of Alkenylboron Compounds:." Thesis, Boston College, 2019. http://hdl.handle.net/2345/bc-ir:108653.

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Thesis advisor: James P. Morken<br>This dissertation will discuss the development of three methodologies for the enantioselective synthesis of organoboron compounds. The first chapter will discuss the initial discovery and development of a palladium-catalyzed reaction that enables the combination of an organolithium, an organoboronic ester and C(sp2)-OTf electrophiles in an enantioselective fashion. This conjunctive cross-coupling takes place through a 1,2-metallate shift which is induced from an alkenylboron ‘ate’ species through interaction with the palladium catalyst. The second chapter of

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19

Edwards, Hannah Joy. "Organoboron reagents and recent strategies in rhodium catalysed additions." Thesis, University of Bath, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.600212.

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The research presented herein is concerned with the exploration of the rhodium catalysed addition of organoboron reagents. Chapter 1 firstly introduces the area of organoboron reagents, focussing on the applications of potassium alkenyl trifluoroborate reagents. Secondly, an extensive discussion of the rhodium catalysed conjugate addition of organboron reagents demonstrates its utility as a key coupling step in recent syntheses. Chapter 2 describes synthetic methods towards alkenylboron reagents and describes the synthesis of functionalised and enantiopure alkenyl trifluoroborate salts. Chapte

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20

Schuster, Christopher Henry. "Synthesis and Utility of Organoboron Reagents for Enantioselective Synthesis." Thesis, Boston College, 2014. http://hdl.handle.net/2345/bc-ir:103558.

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Thesis advisor: James P. Morken<br>Described herein are three distinct projects centered on the formation and use of carbon-boron bonds. In the first, the enantioselective platinum-catalyzed 1,4-diboration of trans-1,3-dienes is advanced in both selectivity and scope through the development of a novel class of electron rich chiral monodentate phosphines. Under the action of the new ligands, highly selective diboration is maintained at reduced loadings of catalyst. Secondly, enantioenriched 1,2-bis(pinacol boronates) are engaged in regioselective Suzuki-Miyaura cross-coupling with aryl and viny

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21

Reis, Joel Savi dos. "Estudo de aplicação de lipases e transaminases como catalisadores na síntese de compostos organoborônicos quirais." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-15012014-110009/.

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Neste trabalho, foi avaliada a resolução cinética de ésteres carboxílicos β-borilados, catalisada por lipases, através de hidrólise e transesterificação. Foram sintentizados ésteres contendo diferentes cadeias carbônicas. A hidrólise enantiosseletiva catalisada por CAL-B forneceu o correspondente ácido carboxílico β-borilado com excesso enantiomérico moderado (e.e. 62%), enquanto os ésteres β-borilados metílico e etílico foram recuperados com excelente pureza enantiomérica (e.e.>99%). A reação de transesterificação enantiosseletiva entre ésteres carboxílicos β-borilados e á

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22

Tonogaki, Keisuke. "Synthesis of olefin-based functional organic molecules using organoboron platforms." 京都大学 (Kyoto University), 2006. http://hdl.handle.net/2433/144036.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第12352号<br>工博第2681号<br>新制||工||1379(附属図書館)<br>24188<br>UT51-2006-J344<br>京都大学大学院工学研究科合成・生物化学専攻<br>(主査)教授吉田潤一, 教授村上正浩, 教授杉野目道紀<br>学位規則第4条第1項該当

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23

Han, Bo. "Deuteriohalogenation of norbornene via organoborane /." Online version of thesis, 1991. http://hdl.handle.net/1850/11307.

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24

Yimamu, (Imam) Maiwulidan (Mewlude). "Chemical vapour deposition of boron-carbon thin films from organoboron precursors." Licentiate thesis, Linköpings universitet, Tunnfilmsfysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-123909.

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Boron-carbon (BxC) thin films enriched in 10B are potential neutron converting layers for 10Bbased solid-state neutron detectors given the good neutron absorption cross-section of 10B atoms in the thin film. Chemical Vapour Deposition (CVD) of such films faces the challenge that the maximum temperature tolerated by the aluminium substrate is 660 °C and low temperature CVD routes for BxC films are thus needed. This thesis presents the use of two different organoboron precursors, triethylboron –B(C2H5)3 (TEB) and trimethylboron – B(CH3)3 (TMB) as single-source precursors for CVD of BxC thin film

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25

Currie, Graeme. "Negative Ion Chemistry of Boron and Carbon Compounds / by Graeme Currie." Title page, contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phc9762.pdf.

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26

Mizori, Farhad G. "Transmetallation from zirconium to boron : the synthesis and conjugate addition of mixed unsymmetrical tricoordinate organoboranes containing phenyl and methyl groups /." Diss., Connect to a 24 p. preview or request complete full text in PDF formate. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3138868.

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27

Aparece, Mark Docto. "Synthesis of Organoboron Compounds via a Palladium-Induced 1,2-Metallate Shift Mechanism:." Thesis, Boston College, 2020. http://hdl.handle.net/2345/bc-ir:108927.

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Thesis advisor: James P. Morken<br>This dissertation describes the development of various palladium-catalyzed syntheses of organoboron compounds with the 1,2-metallate shift of organoboron “ate” complexes as a common mechanistic feature. Chapter one discusses the history of the 1,2-metallate shift with a focus on reactions promoted by transition metals, followed by my work on the palladium-catalyzed, enantioselective, halide-tolerant conjunctive cross-coupling reaction to enable the use of Grignard reagents and arylbromides. Chapter two discusses the attempt to engage allylic electrophiles in

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28

Mszar, Nicholas Walter. "Catalytic Enantioselective Allylation of Imines and Trifluoroketones Using New and Underutilized Organoboron Reagents." Thesis, Boston College, 2017. http://hdl.handle.net/2345/bc-ir:107669.

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Thesis advisor: Amir H. Hoveyda<br>A general method for the catalytic enantioselective addition of silylallenes to phosphinoyl aldimines has been developed. Reactions are promoted in the presence of 5.0 mol% of an N–heterocyclic carbene–copper complex and a silyl-protected propargyl boron reagent. The reaction is efficient, requiring only 10 minutes, highly group selective, enantioselective and products can be further functionalized. Utility is highlighted in the total synthesis of marine alkaloid (S)-(–)-cyclooroidin using our product as a key intermediate in the total synthesis. The catalyti

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29

Royes, Buisan Jordi. "Complementary synthesis of organoboranes to populate the chemical functionality to a given area of biomedical interest." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/668966.

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Aquesta tesi està relacionada amb el desenvolupament de noves metodologies per la incorporació de grups borilo en compostos amb propietats potencialment interessants en el camp biomèdic. Amb aquest objectiu, en la present tesi s'han utilitzat reactius de bor-sofre, reactius geminals-diborilats o el reactiu diborà disponibles comercialment com el B2pin2 que és el més comunament utilitzat. L'àmplia varietat de reactius que contenen bor ha permès el desenvolupament de noves rutes per proporcionar productes cíclics d'alt interès. L'accés a aquestes molècules de gran funcionalitat es pot aconseguir

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30

Lu, Qingyi. "Halogenolyses of tri-alkylborane /." Online version of thesis, 1990. http://hdl.handle.net/1850/11071.

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31

Silverio, Daniel L. "Development of Amino Acid-Derived Ligands for Enantioselective Synthesis of Amines and Alcohols." Thesis, Boston College, 2014. http://hdl.handle.net/2345/bc-ir:104413.

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Thesis advisor: Amir H. Hoveyda<br>Chapter One Development of Simple Organic Molecules as Catalysts for Enantioselective Allyl Additions to N-Phosphinoylaldimines and Isatins A new catalytic protocol for the enantioselective addition of organoborates to imines and carbonyls is described. This novel method, which does not require transition metals utilizes a modular and easily accessed aminophenol to dictate the stereochemistry of the products. Allyl-additions to N-phosphinoylaldimines and isatins, as well as allenyl-additions to isatins are studied and literature relevant to these transformati

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32

Patel, Sejal J. 1976. "Asymmetric nickel-catalyzed three-component assembly of allylic amines from alkynes, imines and organoboron reagents." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17730.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2004.<br>Includes bibliographical references.<br>[Image] ... Allylic amines are assembled in one step from alkynes, imines, and organoboron reagents (boronic acids or boranes) using a catalyst derived from Ni(cod)2 and (c-CsH9)3P or (o-anisyl)3P. This catalytic, three-component process is tolerant of ketones, esters, and free hydroxyl groups; a degree of functional group compatibility unusual for imine addition reactions. The mode of addition across the alkyne is exclusively cis (>97:3), thereby establishing the alkene

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33

Cui, Jian. "Synthesis and characterization of new boron-nitrogen and boron-nitrogen-phosphorus systems." [Fort Worth, Tex.] : Texas Christian University, 2009. http://etd.tcu.edu/etdfiles/available/etd-03162010-123538/unrestricted/Cui.pdf.

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34

Jang, Hwanjong. "Efficient and Selective Synthesis of Multifunctional Organoboron Compounds Promoted by Cu-Based N-Heterocyclic Carbene Complexes." Thesis, Boston College, 2016. http://hdl.handle.net/2345/bc-ir:107188.

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Thesis advisor: Amir H. Hoveyda<br>Chapter 1. We have developed a single-vessel catalytic protocol for double protoboryl additions to terminal alkynes with B2(pin)2 promoted by Cu complex derived from chiral N-heterocyclic carbene (NHC), to achieve enantiomerically enriched versatile vicinal diborons. Since an alkenyl(pinacolato)boron, which was in situ generated by the first protoboration of a terminal alkyne, can serve as an effective substrate for the second protoboration (alkenylboron can allow delocalization of π electrons of olefin to a partially vacant p orbital on boron), single-vessel

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35

Thorpe, Steven Brandon. "Activation of diboron reagents: The development of mild conditions for the synthesis of unique organoboron compounds." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/26669.

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The first successful synthesis and isolation of a boronic acid was reported in 1860 by Frankland in the pursuit of novel organometallic compounds. For more than a century, further studies of boronic acids were sparsely published. Suzuki and Miyaura jumpstarted the field in 1979 with an innovative carbon-carbon bond forming reaction employing an organoboronic acid and a carbon halide under palladium catalysis. Indeed, the Nobel Prize in Chemistry was awarded to Professor Akira Suzuki, along with Professors Richard Heck and Ei-ichi Negishi, in 2010 for their important contributions in palladium-

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36

Namirembe, Sheila. "Stereoselective Synthesis of Organoboron Reagents and their Application Toward the Synthesis of Amphidinolides C and F:." Thesis, Boston College, 2020. http://hdl.handle.net/2345/bc-ir:108841.

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Thesis advisor: James P. Morken<br>This dissertation details three main projects that focus on stereoselective synthesis of organoboron reagents and their application to total synthesis studies. The first chapter describes the development of an enantioselective palladium-catalyzed conjuntive cross-coupling of bis(alkenyl)borates to access chiral allylboron reagents. These reagents are of high synthetic value that is demonstrated through various applications. The second chapter describes the development of a diastereoselective amine-modified boron-Wittig reaction with ketone electrophiles to ac

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37

Yasuhara, Yuichi. "Addition Reactions of Organoboron Reagents to Conjugated Dienes and Alkynes Catalyzed by Iridium and Rhodium Complexes." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120932.

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38

Koo, Seung Moh. "Preparation of Organoboronates through Nickel-Catalyzed Conjunctive Coupling Reactions and Their Applications:." Thesis, Boston College, 2020. http://hdl.handle.net/2345/bc-ir:108956.

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Thesis advisor: James P. Morken<br>This thesis will describe the development of two transition metal catalyzed syntheses of organoboronic compounds. The first section describes relevant concepts and precedents for the conjunctive coupling reaction. In the second section of this thesis, nickel catalyzed conjunctive coupling reaction of carboxylic acid derivatives with 9-BBN derived ate complexes will be discussed, where beta-trialkylboryl ketones are obtained as the product. In the third section, the development of alkyl group migration in nickel-catalyzed conjunctive coupling with C(sp3) elect

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39

Sun, Duo. "Studies towards the synthesis of functionalized aryl fluorides : transition metal catalyzed cross-coupling and fluorination of organoboron reagents." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/43839.

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This thesis covers several synthetic approaches to the generation of highly functionalized aryl fluorides. PtCl₂(SMe₂)₂ and PtCl₂(DMSO)₂ have been applied to catalytic methylation of polyfluoroaryl imines as user-friendly precatalysts. These complexes have demonstrated high selectivity for ortho C-F activation and subsequent functionalization, exhibiting high functional group tolerance while proving more thermal, moisture and air stable than our original catalyst, [PtMe₂(SMe₂)]₂. Nickel-catalyzed Suzuki-Miyaura and Negishi cross-coupling reactions allow rapid functionalized of C-F bonds; we ha

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40

Smith, Donna Lee. "Development of novel metal-catalysed methods for the transformation of Ynamides." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8895.

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I. Rhodium-Catalysed Carbometalation of Ynamides using Organoboron Reagents. As an expansion of existing procedures for the carbometalation of ynamides, it was discovered that [Rh(cod)(MeCN)2]BF4 successfully promotes the carbometalation of ynamides with organoboron reagents. A variety of organoboron reagents were found to be suitable for this reaction, but mostly the use of arylboronic acids was explored. The developed methodology provides β,β-disubstituted enamide products in a regio- and stereocontrolled manner. II. Palladium-Catalysed Hydroacyloxylation of Ynamides. In the presence of pall

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41

Otomaru, Yusuke. "Preparation of new C2-symmetric chiral diene ligands and their use for rhodium-catalyzed asymmetric addition of organoboron reagents." 京都大学 (Kyoto University), 2005. http://hdl.handle.net/2433/144596.

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42

Bell, Christan Elizabeth. "Synthesis and Reactivity of New Organoboron Reagents and Development of New Methodologies for the Generation of Novel Drug-Like Scaffolds." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/265557.

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This research focused on the synthesis of novel ogranoboron reagents in efforts to perform a variety of synthetic transformations, and additionally, the development of new methodologies to generate drug-like scaffolds. Initially, three novel tripod ligands were synthesized, and two were effectively chelated to boron to provide the desired organoborates. Such organoborates were employed in nucleophilic additions where they were found to be ineffective, whereas some activity was observed in Suzuki-Miyaura cross-coupling reactions. An additional project on organoboron compounds was conducted and

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Hayes, Roger Nicholas. "A study of some gas phase nucleophilic substitution reactions of carbon, silicon and boron by ion cyclotron resonance mass spectrometry /." Title page, table of contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phH418.pdf.

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Guan, Lirui Livant Peter D. "An approach to bis(amino acid)s utilizing dimethyl 2,4-bis(diazo)-3-oxoglutarate and studies of this(2,6-dihydroxyphenyl)E,E = B, P." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/GUAN_LIRUI_6.pdf.

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Miralles, Prat Núria. "Catalytic access to (poly)borylated compounds by coupling unsaturated substrates and diboron or methyldiboron reagents." Doctoral thesis, Universitat Rovira i Virgili, 2018. http://hdl.handle.net/10803/462916.

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Aquesta tesi tracta sobre l'ús d'agents diborans i gem-diborilalcans en catàlisi per tal d'introduir un o més fragments borils a substrats insaturats. Per aquest fi, s'han utilitzat diferents reaccions de borilació en condicions organocatalítiques, activant l’agent borant amb un alcòxid format in situ per la combinació de metanol i base. Aquest és el cas de la substitució arílica de salts de iode hipervalent, on fins i tot en absència de base la reacció procedeix degut a la participació del contraió. La diboració d'alquens és un altre exemple de organocatàlisi però amb la incorporació d’un rea

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Brunet, Juliette. "Harnessing boron reactivity for the synthesis of dynamic and reversible polymer networks." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1198.

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Ces travaux de thèse portent sur l’élaboration et l’étude des propriétés thermomécaniques de polymères dynamiques incorporant des dérivés borés. Tout en appliquant ce concept sur une variété d’architectures macromoléculaires : copolymères fonctionnels, briques di- et tri-fonctionelles, deux réactivités distinctes du bore ont été étudiées et exploitées. Une large gamme de méthodes de caractérisation a été utilisée pour mener à bien ce projet : spectroscopies FTIR et RMN sous différents stimuli, ainsi que de nombreuses analyses thermiques et mécaniques. Dans un premier temps, nous avons considér

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Santos, Willy Glen. "Fotoquímica e fotofísica de organoborano em sistema de polimerização." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-17042012-170652/.

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Interações do estado fundamental e espécies transientes, formadas após fotólise e fotossensibilização de 2-ethylaminodiphenylborinate (2APB) e diphenylboronic anhydride (TPhB), foram estudadas por várias técnicas. Os espectros UV mostram uma grande banda de absorção na região do Ultra-violeta. Os espectros de fluorescência mostram o aumento da intensidade de emissão, em 300 nm, que se desloca para o vermelho até 10-3 M. Em concentrações mais elevadas, a intensidade de emissão diminui, provavelmente devido à formação de agregados. Excitação dos organoboranos no UV, em soluções livre de oxigênio

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Chotsaeng, Nawasit. "Enantioselective rhodium-catalysed addition of allylboron reagents to cyclic imines and enantioselective nickel-catalysed Michael additions of 2-acetylazaarenes to nitroalkenes." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/16192.

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Rhodium-catalysed enantioselective allylation reaction of imines in the presence of chiral diene ligands has been investigated. Under the optimised conditions, cyclic imines provided homoallylic amines in high yield and excellent enantioselectivities. The reaction most likely proceeds via allylrhodium(I) intermediates, and represents the first rhodium-catalysed enantioselective nucleophilic allylation of π-electrophiles with allylboron compounds. Furthermore, the allylations display a strong preference for carbon–carbon bond formation at the more substituted terminus of the allyl fragment of t

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Svensson, Akusjärvi Emma [Verfasser]. "Mechanistic Investigations of the Direct Arylation of Pyridine N-oxides with Bromoarenes and Structure-Reactivity Relationship of Aryl Palladium Complexes in Transmetalations with Organoboron Compounds / Emma Svensson Akusjärvi." Berlin : Freie Universität Berlin, 2018. http://d-nb.info/1176635034/34.

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Marques, Carolina Silva. "Synthesis and evaluation of chiral phosphine and NHC-Ligands or heterogeneous asymmetric catalysis." Doctoral thesis, Universidade de Évora, 2013. http://hdl.handle.net/10174/15896.

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No âmbito deste trabalho, foram estudadas as reacções de arilação catalítica assimétrica em vários substratos, utilizando novos e já conhecidos catalisadores quirais, possuindo metais de transição. Esta metodologia levou à formação de novas ligações C-C, fornecendo uma panóplia de interessantes compostos, podendo-se revelar intermediários extremamente úteis na síntese de compostos biologicamente activos. Deve-se salientar a síntese de aminas quirais, α-hidroxiésteres, α-amino-ácidos e α-aminoésteres e também bi-arildiarilaminas, utilizando catalisadores de metais de transição, baseados em Pd,

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