English  |  正體中文  |  简体中文  |  Items with full text/Total items : 54367/62174 (87%)
Visitors : 14804815      Online Users : 133
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTHU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    National Tsing Hua University Institutional Repository > 理學院 > 化學系 > 期刊論文 >  Conjugated Addition of Organocopper Reagents to the Enone Group Adjacent to a CpMo(CO)2(.pi.-allyl) Fragment


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/57650


    Title: Conjugated Addition of Organocopper Reagents to the Enone Group Adjacent to a CpMo(CO)2(.pi.-allyl) Fragment
    Authors: LIN SH;LUSH SF;CHENG WJ;LEE GH;PENG SM;LIAO YL;WANG SL;LIU RS
    教師: 劉瑞雄
    Date: 1994
    Publisher: American Chemical Society
    Relation: Organometallics,American Chemical Society,Volume: 13,Issue: 5,Pages: 1711-1719,Published: MAY 1994
    Keywords: STEREOCONTROLLED FUNCTIONALIZATION
    SUBSEQUENT ALKYLATIONS
    ETA-3-ALLYL COMPLEXES
    MICHAEL ADDITIONS
    Abstract: 1,4-Addition of organocopper reagents to CpMo(CO)2(eta3-1-trans-COCH=CHR-allyl) (R = Ph (1), 2-furyl (2), methyl (3)) proceeded in reasonable diastereoselectivities that can be improved to excellent levels in the presence of BF3.Et2O at one equimolar proportion. The stereochemistry of the major diastereomeric products was elucidated from X-ray structural analysis, which indicated that the minor species of 1-3 in solution, the s-trans-enone conformer, is the active species. The cis-enolates of these major products were selectively generated by LiN(SiMe3)2 which condensed with aldehydes in excellent diastereoselectivities, and X-ray structures of representative products were determined. Further utilization of these aldol products for stereoselective synthesis of 2,3,4,5-tetrahydrofurans is demonstrated
    URI: http://pubs.acs.org/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/57650
    Appears in Collections:[化學系] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML249View/Open


    在NTHUR中所有的資料項目都受到原著作權保護,僅提供學術研究及教育使用,敬請尊重著作權人之權益。若須利用於商業或營利,請先取得著作權人授權。
    若發現本網站收錄之內容有侵害著作權人權益之情事,請權利人通知本網站管理者(smluo@lib.nthu.edu.tw),管理者將立即採取移除該內容等補救措施。

    SFX Query

    與系統管理員聯絡

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback