{"id":{"repo_id":"windsor","oai_identifier":"oai:uwindsor.scholaris.ca:20.500.14776/1011"},"canonical_url":"https://search.dev.ndltd.org/etd/windsor/oai:uwindsor.scholaris.ca:20.500.14776/1011","repository":{"repo_id":"windsor","name":"University of Windsor","base_url":"https://uwindsor.scholaris.ca/server/oai/request"},"display":{"title":"Cobalt stabilized gamma-chloroalkynones and alkynoates as gamma-carbonyl cation synthons.","abstract":"$\\gamma$-Cationic-$\\alpha,\\beta$-unsaturated carbonyl synthons have been prepared via hexacarbonyldicobalt complexed $\\gamma$-chloroalkynoates and alkynones (100). Treatment of 100 with silver salts in the presence of silyl enol ethers (102-104) generated 2-alkynyl-1,6-dicarbonyl compounds (134-149) in poor to good yields. Products of 101, with a non hydrogen substituent at the propargyl site, with 102 and 103 generated syn and anti diastereomers. The ratios of syn:anti diastereomers range from 1.3: 1 to 2.1: 1 for 102 to 6.9: 1 to 15: 1 for 103. These ratios are similar to literature compounds. Decomplexation to the alkyne effected in good to excellent yields. A dimer 151 was formed accidentally in poor yield with structural characteristics similar to compounds in its class. Source: Masters Abstracts International, Volume: 34-06, page: 2379. Adviser: J. R. Green. Thesis (M.Sc.)--University of Windsor (Canada), 1995.","abstract_html":"<span class=\"etd-inline-math\">&gamma;</span>-Cationic-<span class=\"etd-inline-math\">&alpha;,&beta;</span>-unsaturated carbonyl synthons have been prepared via hexacarbonyldicobalt complexed <span class=\"etd-inline-math\">&gamma;</span>-chloroalkynoates and alkynones (100). Treatment of 100 with silver salts in the presence of silyl enol ethers (102-104) generated 2-alkynyl-1,6-dicarbonyl compounds (134-149) in poor to good yields. Products of 101, with a non hydrogen substituent at the propargyl site, with 102 and 103 generated syn and anti diastereomers. The ratios of syn:anti diastereomers range from 1.3: 1 to 2.1: 1 for 102 to 6.9: 1 to 15: 1 for 103. These ratios are similar to literature compounds. Decomplexation to the alkyne effected in good to excellent yields. A dimer 151 was formed accidentally in poor yield with structural characteristics similar to compounds in its class. Source: Masters Abstracts International, Volume: 34-06, page: 2379. Adviser: J. R. Green. Thesis (M.Sc.)--University of Windsor (Canada), 1995.","abstract_has_math":true,"creators":["Vizniowski, Charles Stephen."],"institution":"University of Windsor","degree_name":"M.Sc.","degree_level":"Masters","degree_discipline":"Chemistry and Biochemistry","degree_department":null,"school":null,"contributors":[],"advisors":["Green, J."],"committee_chairs":[],"committee_members":[],"year":1995,"date_issued":"1995-01-01","date_published":"1995-01-01","updated_at":"2026-07-27T22:04:50Z","subjects":[],"languages":["en_CA"],"rights":[],"rights_urls":["http://creativecommons.org/licenses/by-nc-nd/4.0/"],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14776/1011","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Green, J."]},{"key":"dc:creator","label":"Author","values":["Vizniowski, Charles Stephen."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-06-12 11:12"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2013-03-19 7:21","2025-06-12T15:12:18Z"]},{"key":"dc:date.issued","label":"Date","values":["1995-01-01"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry and Biochemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.Sc."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Windsor"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_CA"]},{"key":"dc:rights","label":"Dc Rights","values":["http://creativecommons.org/licenses/by-nc-nd/4.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14776/1011"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["$\\gamma$-Cationic-$\\alpha,\\beta$-unsaturated carbonyl synthons have been prepared via hexacarbonyldicobalt complexed $\\gamma$-chloroalkynoates and alkynones (100). Treatment of 100 with silver salts in the presence of silyl enol ethers (102-104) generated 2-alkynyl-1,6-dicarbonyl compounds (134-149) in poor to good yields. Products of 101, with a non hydrogen substituent at the propargyl site, with 102 and 103 generated syn and anti diastereomers. The ratios of syn:anti diastereomers range from 1.3: 1 to 2.1: 1 for 102 to 6.9: 1 to 15: 1 for 103. These ratios are similar to literature compounds. Decomplexation to the alkyne effected in good to excellent yields. A dimer 151 was formed accidentally in poor yield with structural characteristics similar to compounds in its class. Source: Masters Abstracts International, Volume: 34-06, page: 2379. Adviser: J. R. Green. Thesis (M.Sc.)--University of Windsor (Canada), 1995."]},{"key":"dc:title","label":"Title","values":["Cobalt stabilized gamma-chloroalkynones and alkynoates as gamma-carbonyl cation synthons."]}]}],"canonical_facts":{"dc:contributor.advisor":["Green, J."],"dc:creator":["Vizniowski, Charles Stephen."],"dc:date.accessioned":["2025-06-12 11:12"],"dc:date.available":["2013-03-19 7:21","2025-06-12T15:12:18Z"],"dc:date.issued":["1995-01-01"],"dc:description.abstract":["$\\gamma$-Cationic-$\\alpha,\\beta$-unsaturated carbonyl synthons have been prepared via hexacarbonyldicobalt complexed $\\gamma$-chloroalkynoates and alkynones (100). Treatment of 100 with silver salts in the presence of silyl enol ethers (102-104) generated 2-alkynyl-1,6-dicarbonyl compounds (134-149) in poor to good yields. Products of 101, with a non hydrogen substituent at the propargyl site, with 102 and 103 generated syn and anti diastereomers. The ratios of syn:anti diastereomers range from 1.3: 1 to 2.1: 1 for 102 to 6.9: 1 to 15: 1 for 103. These ratios are similar to literature compounds. Decomplexation to the alkyne effected in good to excellent yields. A dimer 151 was formed accidentally in poor yield with structural characteristics similar to compounds in its class. Source: Masters Abstracts International, Volume: 34-06, page: 2379. Adviser: J. R. Green. Thesis (M.Sc.)--University of Windsor (Canada), 1995."],"dc:identifier.uri":["https://hdl.handle.net/20.500.14776/1011"],"dc:language.iso":["en_CA"],"dc:rights":["http://creativecommons.org/licenses/by-nc-nd/4.0/"],"dc:title":["Cobalt stabilized gamma-chloroalkynones and alkynoates as gamma-carbonyl cation synthons."],"dc:type":["text"],"thesis:degree_discipline":["Chemistry and Biochemistry"],"thesis:degree_level":["Masters"],"thesis:degree_name":["M.Sc."],"thesis:institution_name":["University of Windsor"]},"updated_at":"2026-07-27T22:04:50Z"}