DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Lee, Hee-Yoon | - |
dc.contributor.advisor | 이희윤 | - |
dc.contributor.author | Bae, Im-Hyuck | - |
dc.contributor.author | 배임혁 | - |
dc.date.accessioned | 2011-12-13T04:47:06Z | - |
dc.date.available | 2011-12-13T04:47:06Z | - |
dc.date.issued | 1999 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=151674&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/31815 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 화학과, 1999.2, [ ii, 57 p. ] | - |
dc.description.abstract | The development of catalytic processes that effect enantioselective bond formation under mild conditions is an important and challenging task in modern chemical synthesis. In this connection, chiral $C_2$-symmetric ansa-metallocenes have found notable applications as catalysts. In order to study the effects of heteroatoms on the ring, new ansa-metallocenes were designed. From 4-pentynol, bis(enynes) 8 was synthesized. This bis(enynes) was also prepared from propargyl alcohol with low overall yield. This bis(enynes) was subject to Pauson-Khand reaction to give bis(cyclopentanone) 15. The other plan to synthesize new ansa-metallocene was to introduce stereocenters on the bridge. Synthesis from dimethyl-L-tartrate to bis(enynes) 17 and a plan that utilize Ti-based enantioselective homocoupling reaction as a key step were studied. From D-mannitol, bis(enynes) 47, 48, 50 were prepared effectively. These bis(enynes) were subjected to Pauson-Khand reaction in the hope to produce bis(cyclopetenones) only to yield cobalt coordinated complexes. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Bis(enynes) | - |
dc.subject | Ansa-metallocene | - |
dc.subject | Pauson-Khand cyclization | - |
dc.subject | 비스엔아인 | - |
dc.subject | 안사메탈로센 | - |
dc.subject | 포송칸드고리화반응 | - |
dc.title | Studies on the synthesis of new ansa-metallocene | - |
dc.title.alternative | 새로운 안사메탈로센 합성에 관한 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 151674/325007 | - |
dc.description.department | 한국과학기술원 : 화학과, | - |
dc.identifier.uid | 000973307 | - |
dc.contributor.localauthor | Lee, Hee-Yoon | - |
dc.contributor.localauthor | 이희윤 | - |
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