发明授权
US06573387B1 Synthesis of &agr;,&bgr;-substituted amino amides, esters, and acids 有权
α,β-取代氨基酰胺,酯和酸的合成

  • 专利标题: Synthesis of &agr;,&bgr;-substituted amino amides, esters, and acids
  • 专利标题(中): α,β-取代氨基酰胺,酯和酸的合成
  • 申请号: US09381407
    申请日: 2000-01-31
  • 公开(公告)号: US06573387B1
    公开(公告)日: 2003-06-03
  • 发明人: K. Barry SharplessA. Erik Rubin
  • 申请人: K. Barry SharplessA. Erik Rubin
  • 主分类号: C07D20304
  • IPC分类号: C07D20304
Synthesis of &agr;,&bgr;-substituted amino amides, esters, and acids
摘要:
&agr;,&bgr;-Unsaturated amides and esters are converted to &agr;,&bgr;-substituted amino amides, esters, and acids. An &agr;,&bgr;unsaturated amide or ester is first converted to an &agr;,&bgr;-hydroxysulfonamide or hydroxycarbamate amide or ester using an osmium-catalyzed aminohydroxylation. The &agr;,&bgr;-hydroxysulfonamide or hydroxycarbamate amides or esters is then cyclodehydrated to produce a &agr;,&bgr;-N-sulfonyl- or the &agr;,&bgr;-N-carbamoylaziridine amide or ester. The ring of aziridine intermediate is then nucleophilically opened in a regioselective manner with a variety of nucleophiles to give the $g(&agr;,&bgr;-substituted amino- amides or esters. Preferred nucleophiles include sulfur, oxygen, carbon, and nitrogen nucleophiles.
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