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Base-induced cyclisations of ortho-substituted nitro-aromatics
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dc.contributor.advisor | Smith, D. M. | |
dc.contributor.author | McFarlane, Michael David | |
dc.coverage.spatial | 206 p. | en_US |
dc.date.accessioned | 2018-07-10T15:56:44Z | |
dc.date.available | 2018-07-10T15:56:44Z | |
dc.date.issued | 1988 | |
dc.identifier.uri | https://hdl.handle.net/10023/15209 | |
dc.description.abstract | In Chapter I some of the chemical, biological and physical properties of purine analogues, particularly benzimidazole N-oxides, are briefly discussed. In Chapter II, the preparations of 4-, 5-, 6-, and 7-amino-1H-benzimidazole 3-oxides are described. The methods employed involve base-induced cyclisation of suitably protected aminonitrophenyl glycine derivatives (esters or nitriles) followed by hydrolysis of the ester or nitrile and decarboxylation. In Chapter III, attempts are made to prepare imidazopyridine N-oxides, an area of N-oxide chemistry little explored. Although few derivatives of this class of compound are synthesised, the preparation of the parent 3H-imidazo[4 ,5-b]pyridine 1-oxide is accomplished. In Chapter IV, the possibility of preparing 1-methylbenzimidazole 3-oxides by the methods used in Chapters II and III is investigated, but unexpected results are obtained e.g. cyclisation of O-nitropheny1-sarcosine esters gives 1-hydroxy-4-methylquinoxaline-2, 3-diones. These reactions have instigated an investigation into the general mechanism for the base-induced cyclisations discussed in this thesis. | en_US |
dc.language.iso | en | en_US |
dc.publisher | University of St Andrews | |
dc.subject.lcc | QD341.N8M3 | |
dc.subject.lcsh | Nitroaromatic compounds | en |
dc.title | Base-induced cyclisations of ortho-substituted nitro-aromatics | en_US |
dc.type | Thesis | en_US |
dc.contributor.sponsor | Science Research Council (Great Britain) | en_US |
dc.type.qualificationlevel | Doctoral | en_US |
dc.type.qualificationname | PhD Doctor of Philosophy | en_US |
dc.publisher.institution | The University of St Andrews | en_US |
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