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Relevant bibliographies by topics / Directed Ortho Metalation

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Dissertations / Theses

Academic literature on the topic 'Directed Ortho Metalation'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Dissertations / Theses on the topic "Directed Ortho Metalation"

1

Timmons, Michael. "Directed Ortho-Metalation of Dimethylarylamines." TopSCHOLAR®, 2002. http://digitalcommons.wku.edu/theses/641.

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Site-specific product(s) from the reaction of benzene derivatives with various reagents is a need of researchers at numerous laboratories, particularly those in the pharmaceutical industry. Such derivatives can be synthesized directly, i.e., by substitution of a proton, using either of two procedures: electrophilic aromatic substitution (EAS) or directed ortho-metalation (DoM). Directed ortho-metalation (DoM) is an alternative aromatic substitution process initiated by organolithium reagents which provides regiospecific substitution exclusively at the ortho- position (equation). The focus of t

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2

Woosley, Barry. "Directed ortho Metalation in Hydrocarbon Solvents: Opposing Pi-Resonance Effects." TopSCHOLAR®, 2004. http://digitalcommons.wku.edu/theses/539.

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Hydrocarbon solvents are known to be unreactive toward organolithium reagents and do not typically support ortho-metalation reactions without the aid of a promoter. An exception would be an arene substrate having the capability to bidentate complex to the reactive alkyllithium dimer, which enables ortho-metalation to occur in high yields. A second, more limiting exception, would be that the arene substrate possesses localized lone pairs of electrons, as is the case when the directed ortho metalating group (DMG) is located in the benzyl position. The work reported here centers upon developing a

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3

Cai, Xiongwei. "Regiospecific synthesis of alkylphenanthrenes using a combined directed ortho metalation, DoM, (Suzuki-Miyaura cross coupling), directed remote metalation, DreM, methodology." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ63276.pdf.

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4

Friesen, Carl. "Directed Ortho-Metalation of the Three Methyl Anisoles in Various Media." TopSCHOLAR®, 1996. http://digitalcommons.wku.edu/theses/870.

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Directed ortho-metalation (DoM) is a very useful alternative to electrophillic aromatic substitution (EAS) for the synthesis of substituted aromatic compounds. DoM is highly regiospecific providing metalation chiefly in the ortho-position. However, lateral (a-) metalation of an alkyl side-chain and ortho-metalation of a second ortho-position can compete. Investigation of the three methylanisoles was therefore undertaken to determine the interplay between these factors and to discover metalation conditions to achieve selectivity. This goal was uniquely achieved for p-methylanisole where conditi

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5

Macklin, Todd Kristopher. "The development of sulfamates as latent directed metalation groups. Total synthesis of schumanniophytine. Divergent synthesis of substituted chromone 3- and 8-carboxamides." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/925.

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6

Milburn, Claire Louise Maud Jackson. "The directed ortho metalation reaction of aryl O-carbamates on solid support." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ63340.pdf.

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7

Kendall, Christopher Nicholas Owen. "The directed ortho metalation - Suzuki-Miyaura cross-coupling connection, towards the total synthesis of dehydrorabelomycin." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/MQ54462.pdf.

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8

Lai, Ping-Shan. "Directed ortho metalation-boronation Suzuki-Miyaura cross coupling leading to synthesis of azafluorenol core liquid crystals." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/511.

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9

Chauder, Brian Andrew. "Combined directed ortho metalation-transition metal catalyzed coupling reactions for the synthesis of chromenes, ergot alkaloids, and biaryl macrocycles." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ63410.pdf.

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10

Onuska, Nicholas Paul Ralph. "Studies Towards the Synthesis of 2,5-Disubstituted-3-Fluorothiophenes Using a Directed Ortho-Metalation/Nickel-Catalyzed Cross-Coupling Approach." Kent State University Honors College / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1460652408.

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