DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kang, Sung-Ho | - |
dc.contributor.advisor | 강성호 | - |
dc.contributor.author | Park, Cheol-Min | - |
dc.contributor.author | 박철민 | - |
dc.date.accessioned | 2011-12-13T04:47:34Z | - |
dc.date.available | 2011-12-13T04:47:34Z | - |
dc.date.issued | 2000 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=158655&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/31845 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 화학과, 2000.2, [ iii, 51 p. ] | - |
dc.description.abstract | Syntheses of chiral electrophilic reagents were studied. N-Iodo electrophilic reagents were prepared from L-tartaric acid. Intra- and inter- molecular electrophilic reactions using these reagents showed little enantioselectivity. Next we intended to secure chiral pyridine or ether type ligands which can make complexes with $I_2$. The reaction using these complexes gave low enantioselectivity. Using mercury(II) cation as an electrophile and salen as a chiral ligand, many electrophilic reactions were performed. With salen 41 and substrate 19, 73% ee was obtained. Finally we attempted to generate chiral electrophiles using transition metal complexes. In the case of NIS as a source of electrophile, (R)-BINOL-Ti(IV) complex seemed to form chiral electrophiles. Several reactions using this complex afforded interesting results that chirality from chiral ligands could be transferred to substrates. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Binol-Titanium complexes | - |
dc.subject | Salen | - |
dc.subject | Chiral electrophilic reagents | - |
dc.subject | Lewis acid | - |
dc.subject | 루이스 산 | - |
dc.subject | 바이놀-타이타늄 콤플렉스 | - |
dc.subject | 살렌 | - |
dc.subject | 비대칭 친전자성 시약 | - |
dc.title | Syntheses of tetrahydrofurans via asymmetric electrophilic addition reactions | - |
dc.title.alternative | 비대칭 친전자성 부가반응에 의한 테트라히드로푸란의 합성 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 158655/325007 | - |
dc.description.department | 한국과학기술원 : 화학과, | - |
dc.identifier.uid | 000983237 | - |
dc.contributor.localauthor | Kang, Sung-Ho | - |
dc.contributor.localauthor | 강성호 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.