Intramolecular cyclization of amido-(thio) ureidoacetals in acidic and basic conditions산성 및 염기성 조건에서 아마이도-(티오) 유레이도 아세탈 화합물들의 분자내 환화반응

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 522
  • Download : 0
DC FieldValueLanguage
dc.contributor.advisorPark, Ho-Koon-
dc.contributor.advisor박호군-
dc.contributor.authorLee, Yong-Sup-
dc.contributor.author이용섭-
dc.date.accessioned2011-12-13T04:56:20Z-
dc.date.available2011-12-13T04:56:20Z-
dc.date.issued1985-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=64393&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/32427-
dc.description학위논문(석사) - 한국과학기술원 : 화학과, 1985.2, [ iii, 54 p. ]-
dc.description.abstractThe 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.languageeng-
dc.publisher한국과학기술원-
dc.titleIntramolecular cyclization of amido-(thio) ureidoacetals in acidic and basic conditions-
dc.title.alternative산성 및 염기성 조건에서 아마이도-(티오) 유레이도 아세탈 화합물들의 분자내 환화반응-
dc.typeThesis(Master)-
dc.identifier.CNRN64393/325007-
dc.description.department한국과학기술원 : 화학과, -
dc.identifier.uid000831601-
dc.contributor.localauthorPark, Ho-Koon-
dc.contributor.localauthor박호군-
Appears in Collection
CH-Theses_Master(석사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0