DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Park, Ho-Koon | - |
dc.contributor.advisor | 박호군 | - |
dc.contributor.author | Lee, Yong-Sup | - |
dc.contributor.author | 이용섭 | - |
dc.date.accessioned | 2011-12-13T04:56:20Z | - |
dc.date.available | 2011-12-13T04:56:20Z | - |
dc.date.issued | 1985 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=64393&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/32427 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 화학과, 1985.2, [ iii, 54 p. ] | - |
dc.description.abstract | The reactivity and selectivity of amide and (thio) urea groups toward the acetal groups in amido-(thio) ureidoacetals were competitively examined in acidic and basic conditions. The acid-catalyzed cyclization of amido-ureidoacetals afforded only imidazolinone derivatives. The corresponding cyclization of amido-thioureidoacetals afforded mostly 5-methoxyiminothiazolidine and small amount of pyrazinone and thiohydantoin derivatives. These product ratios were varied with acidity, which might be expected through the different reaction mechanism. Amido-(thio)ureidoacetals gave (thio)hydantoin derivatives in good yield in the presence of base by intramolecular amide-exchange reaction. The details of the proposed reaction mechanisms are discussed. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.title | Intramolecular cyclization of amido-(thio) ureidoacetals in acidic and basic conditions | - |
dc.title.alternative | 산성 및 염기성 조건에서 아마이도-(티오) 유레이도 아세탈 화합물들의 분자내 환화반응 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 64393/325007 | - |
dc.description.department | 한국과학기술원 : 화학과, | - |
dc.identifier.uid | 000831601 | - |
dc.contributor.localauthor | Park, Ho-Koon | - |
dc.contributor.localauthor | 박호군 | - |
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