Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.775689
Title: Synthetic approaches to nitrene precursors
Author: Price, Cynthia
Awarding Body: Keele University
Current Institution: Keele University
Date of Award: 1979
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Abstract:
Chapter One describes the search for a synthetic route to 2-azidodiphenylmethanes and 2-azidotriphenylmethanes carrying electron withdrawing substituents in the 4'- and 4W- positions. Extensive use is made of the new Grignard reagent, 4~(1,3-dioxan-2-yl)phenylmagnesium bromide to prepare many novel diphenyl- and triphenyl-methanols, and benzophenones. The reduction of these compounds to the required diphenyl- and triphenyl-methanes is difficult, however, and although 2-amino-4'-carboxymethyldiphenylmethane is obtained in one instance, the reaction is not reproducible. Further uses for the 3- and 4-0,3-dioxan-2-yl)phenylmagnesium bromide synthons are investigated in Chapter Two. These Grignard reagents provide a useful synthetic route to many known compounds, and also to some previously unprepared compounds such as 3- and 4-0- hydroxyethyl)benzaldehyde, and 4-(l,3-dioxan-2-yl)benzyl bromide. Chapter Three describes the preparation and decomposition of 2-azido-4*,4",bis(dimethylamino)triphenylmethane and 2-azidophenyl-2- thiazolylmethane. Extensive tar formation occurs during both decompositions. 2-Aminophenyl-2-thiazolylmethane is the only identified product from the thermolysis of 2-azidophenyl-2-thiazolylmethane. The thermolysis of 2-azido-4',4"-bis(dimethylamino)triphenylmethane, however, results in the formation of 3-dimethylamino-9-(4'-dimethylaminopheny1)acridine, and the "rearranged" 2-dime thylamino-9-(4'-dimethylaminophenyl)acridine. "Rearranged" acridines have not previously been obtained from the decomposition of members of the 2-azidotriphenylmethanes.
Supervisor: Jones, Gurnos Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.775689  DOI: Not available
Keywords: QD Chemistry
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