发明授权
- 专利标题: Catalytic asymmetric reduction of trisubstituted olefins
- 专利标题(中): 三取代烯烃的催化不对称还原
-
申请号: US273842申请日: 1994-07-12
-
公开(公告)号: US5491233A公开(公告)日: 1996-02-13
- 发明人: Stephen L. Buchwald , Richard D. Broene , Nancy E. Lee
- 申请人: Stephen L. Buchwald , Richard D. Broene , Nancy E. Lee
- 申请人地址: MA Cambridge
- 专利权人: Massachusetts Institute of Technology
- 当前专利权人: Massachusetts Institute of Technology
- 当前专利权人地址: MA Cambridge
- 主分类号: C07B35/02
- IPC分类号: C07B35/02 ; C07B41/02 ; C07B43/04 ; C07B53/00 ; C07C5/03 ; C07C5/05 ; C07C29/143 ; C07C29/147 ; C07C209/52 ; C07C209/70 ; C07D207/06 ; C07D295/023 ; C07D307/52 ; C07D265/30 ; C07C21/00 ; C07C43/02 ; C07C209/00 ; C07D207/46
摘要:
A catalytic asymmetric reduction process, which, by hydrogenating trisubstituted olefins, yields a corresponding organic compound having a high level of enantiomeric purity is disclosed. The process is also effective for the catalytic asymmetric reduction of certain enamines and related compounds to yield a corresponding amine or related compound, respectively, having a high level of enantiomeric purity. The reduction process utilizes a chiral metal catalyst that includes a metal or metal complex that is selected from groups 3, 4, 5, or 6, lanthanides and actinides. Moreover, the process uses hydrogen as the stoichiometric reducing agent and may be carried out at pressures ranging from about 0.5 to 200 atmospheres. The reaction can also be carried out using an acidic compound as a rate enhancing additive.
公开/授权文献
- US4337378A On-hook/off-hook detector circuit 公开/授权日:1982-06-29
信息查询