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Durham e-Theses
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Iridium-Catalysed Borylation of Heteroaromatic C-H Bonds

WRIGHT, JAY,SAMUEL (2019) Iridium-Catalysed Borylation of Heteroaromatic C-H Bonds. Doctoral thesis, Durham University.

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Organoboron compounds are of great importance to organic, medicinal, and materials chemistry, representing key intermediates for the introduction of a wide variety of functional groups. This is best exemplified by the Suzuki-Miyaura cross-coupling reaction. In recent years, the direct C-H borylation of arenes has become an attractive method for the synthesis of aryl boronate esters. However, this transformation is more challenging for heteroarenes bearing an azinyl nitrogen atom, where the presence of the nitrogen lone pair can inhibit the reaction. This is particularly evident at the proximal C-H bond, where C-H activation often does not occur. Whilst many heteroarenes have been investigated, aminopyrazoles remain underexplored. This nucleus features in an array of bioactive molecules, such as herbicides, anti-cancer, and anti-parastic drugs. This thesis presents simple methods for the selective C-H functionalisation of 3- and 5-aminopyrazoles.

Item Type:Thesis (Doctoral)
Award:Doctor of Philosophy
Keywords:Iridium, Catalysis, Borylation, Heterocycles, C-H Activation
Faculty and Department:Faculty of Science > Chemistry, Department of
Thesis Date:2019
Copyright:Copyright of this thesis is held by the author
Deposited On:24 Apr 2019 14:39

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