{"id":{"repo_id":"de-montfort","oai_identifier":"oai:dora.dmu.ac.uk:2086/24974"},"canonical_url":"https://search.dev.ndltd.org/etd/de-montfort/oai:dora.dmu.ac.uk:2086/24974","repository":{"repo_id":"de-montfort","name":"De Montfort University","base_url":"https://dora.dmu.ac.uk/server/oai/request"},"display":{"title":"A Contribution to the Chemistry of 1,2,3-BENZOTHIADIAZOLE","abstract":"The chemistry of systems containing the 1,2,5-thia;diazole The nitration of 1,2,5-henzothiadiazole and the chlorination, iodination, diazo-coupling, and nitration of the four amino-l,2,3--henzothiadia2oles and some of their N~acyl derivatives have been studied. Differences in the 300-350 region of the spectra of 2- and 4-phenylazo-l-naphthylamines are found in analogous derivatives of 1,2,3-benzotEiadiazole and are used to orientate products of diazo-coupling. The reasons for believing that 1,2,3-benzothiadiazole is a cyclic ring compound are reviewed. Its pKa and ultraviolet spectrum are discussed. Evidence that the -NsN- group in 1,2,3-benzothiadiazole resembles a nitro-group is quoted and this fact together with the suggestion that there is partial bond fixation in the benzene ring is used to explain the products of electrophilic substitution. Much of the work described in this thesis has already been published 1,2 and the remainder is largely incorporated in a third paper. The latter has recently been recommended for publication in the Journal of The Chemical Society.","abstract_html":"The chemistry of systems containing the 1,2,5-thia;diazole The nitration of 1,2,5-henzothiadiazole and the chlorination, iodination, diazo-coupling, and nitration of the four amino-l,2,3--henzothiadia2oles and some of their N~acyl derivatives have been studied. Differences in the 300-350 region of the spectra of 2- and 4-phenylazo-l-naphthylamines are found in analogous derivatives of 1,2,3-benzotEiadiazole and are used to orientate products of diazo-coupling. The reasons for believing that 1,2,3-benzothiadiazole is a cyclic ring compound are reviewed. Its pKa and ultraviolet spectrum are discussed. Evidence that the -NsN- group in 1,2,3-benzothiadiazole resembles a nitro-group is quoted and this fact together with the suggestion that there is partial bond fixation in the benzene ring is used to explain the products of electrophilic substitution. Much of the work described in this thesis has already been published 1,2 and the remainder is largely incorporated in a third paper. The latter has recently been recommended for publication in the Journal of The Chemical Society.","abstract_has_math":false,"creators":[],"institution":"De Montfort University","degree_name":"PhD","degree_level":"Doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Heard, David Dunn"],"committee_chairs":[],"committee_members":[],"year":1964,"date_issued":"1964-06","date_published":"1964-06","updated_at":"2026-07-24T06:18:40Z","subjects":[],"languages":[],"rights":[],"rights_urls":["https://dora.dmu.ac.uk/bitstreams/abb8130f-2651-44f0-a081-63e58565c7f1/download"],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Heard, David Dunn"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["1964-06"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Faculty of Health and Life Sciences"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["De Montfort University"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://hdl.handle.net/2086/24974"]},{"key":"dc:type","label":"Dc Type","values":["Thesis or dissertation"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Doctoral"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["PhD"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["https://dora.dmu.ac.uk/bitstreams/abb8130f-2651-44f0-a081-63e58565c7f1/download"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://dora.dmu.ac.uk/bitstreams/485bebbd-46d2-47a9-b538-47be615b7f32/download"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The chemistry of systems containing the 1,2,5-thia;diazole The nitration of 1,2,5-henzothiadiazole and the chlorination, iodination, diazo-coupling, and nitration of the four amino-l,2,3--henzothiadia2oles and some of their N~acyl derivatives have been studied. Differences in the 300-350 region of the spectra of 2- and 4-phenylazo-l-naphthylamines are found in analogous derivatives of 1,2,3-benzotEiadiazole and are used to orientate products of diazo-coupling. The reasons for believing that 1,2,3-benzothiadiazole is a cyclic ring compound are reviewed. Its pKa and ultraviolet spectrum are discussed. Evidence that the -NsN- group in 1,2,3-benzothiadiazole resembles a nitro-group is quoted and this fact together with the suggestion that there is partial bond fixation in the benzene ring is used to explain the products of electrophilic substitution. Much of the work described in this thesis has already been published 1,2 and the remainder is largely incorporated in a third paper. 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The reasons for believing that 1,2,3-benzothiadiazole is a cyclic ring compound are reviewed. Its pKa and ultraviolet spectrum are discussed. Evidence that the -NsN- group in 1,2,3-benzothiadiazole resembles a nitro-group is quoted and this fact together with the suggestion that there is partial bond fixation in the benzene ring is used to explain the products of electrophilic substitution. Much of the work described in this thesis has already been published 1,2 and the remainder is largely incorporated in a third paper. 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