An unexpected discovery in 1940 revealed that urea has the peculiar property to form crystalline adducts with many straight chain organic compounds. Since the discovery, considerable time and money have been spent on the elucidation of this phenomenon, and the field of urea adducts has now advanced to the stage at which many empirical rules have been observed but, unfortunately, no sound theory has been formulated.
The purpose of this research was to determine the effect, if any, of changes in structure upon the amount of urea required to adduct with esters. The change in structure consisted of changing the position of the carbonyl group in a series of straight chain twenty-carbon esters.
","abstract_html":"<p>An unexpected discovery in 1940 revealed that urea has the peculiar property to form crystalline adducts with many straight chain organic compounds. Since the discovery, considerable time and money have been spent on the elucidation of this phenomenon, and the field of urea adducts has now advanced to the stage at which many empirical rules have been observed but, unfortunately, no sound theory has been formulated.</p><p>The purpose of this research was to determine the effect, if any, of changes in structure upon the amount of urea required to adduct with esters. The change in structure consisted of changing the position of the carbonyl group in a series of straight chain twenty-carbon esters.</p>","abstract_has_math":false,"creators":["Smith, Gerard Vinton"],"institution":null,"degree_name":"Master of Science (M.S.)","degree_level":"Thesis","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Emerson G. Cobb"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1956,"date_issued":"1956-01-01T08:00:00Z","date_published":"1956-01-01T08:00:00Z","updated_at":"2026-07-24T05:36:21Z","subjects":["Esters","Urea","Chemistry","Physical Sciences and Mathematics"],"languages":[],"rights":[],"rights_urls":["http://rightsstatements.org/vocab/NKC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"https://scholarlycommons.pacific.edu/uop_etds/348","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Emerson G. Cobb"]},{"key":"dc:creator","label":"Author","values":["Smith, Gerard Vinton"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2018-06-29T08:41:03Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (M.S.)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Esters","Urea","Chemistry","Physical Sciences and Mathematics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["http://rightsstatements.org/vocab/NKC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarlycommons.pacific.edu/uop_etds/348"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["An unexpected discovery in 1940 revealed that urea has the peculiar property to form crystalline adducts with many straight chain organic compounds. Since the discovery, considerable time and money have been spent on the elucidation of this phenomenon, and the field of urea adducts has now advanced to the stage at which many empirical rules have been observed but, unfortunately, no sound theory has been formulated.
The purpose of this research was to determine the effect, if any, of changes in structure upon the amount of urea required to adduct with esters. The change in structure consisted of changing the position of the carbonyl group in a series of straight chain twenty-carbon esters.
"]},{"key":"dc:source","label":"Dc Source","values":["29"]},{"key":"dc:title","label":"Title","values":["The effects of structural changes on the formation of urea adducts of esters"]}]}],"canonical_facts":{"dc:contributor":["Emerson G. Cobb"],"dc:creator":["Smith, Gerard Vinton"],"dc:date.available":["2018-06-29T08:41:03Z"],"dc:description.abstract":["An unexpected discovery in 1940 revealed that urea has the peculiar property to form crystalline adducts with many straight chain organic compounds. Since the discovery, considerable time and money have been spent on the elucidation of this phenomenon, and the field of urea adducts has now advanced to the stage at which many empirical rules have been observed but, unfortunately, no sound theory has been formulated.
The purpose of this research was to determine the effect, if any, of changes in structure upon the amount of urea required to adduct with esters. The change in structure consisted of changing the position of the carbonyl group in a series of straight chain twenty-carbon esters.
"],"dc:identifier":["https://scholarlycommons.pacific.edu/uop_etds/348"],"dc:rights":["http://rightsstatements.org/vocab/NKC/1.0/"],"dc:source":["29"],"dc:subject":["Esters","Urea","Chemistry","Physical Sciences and Mathematics"],"dc:title":["The effects of structural changes on the formation of urea adducts of esters"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science (M.S.)"]},"updated_at":"2026-07-24T05:36:21Z"}