Process for preparing dibenzofurans via catalytic heteroannulation
    5.
    依法登记的发明
    Process for preparing dibenzofurans via catalytic heteroannulation 失效
    通过催化杂化法制备二苯并呋喃的方法

    公开(公告)号:USH1406H

    公开(公告)日:1995-01-03

    申请号:US54982

    申请日:1993-04-30

    申请人: Matthew R. Powers

    发明人: Matthew R. Powers

    IPC分类号: C07D307/91

    CPC分类号: C07D307/91

    摘要: The present invention is directed to the synthesis of 2-chloro-cis-[5a(S)-9a(S)-(5a,6,7,8,9,9a-hexahydro)]dibenzofuran-4-carboxylic acid by a stereospecific catalytic heteroannulation synthesis free of undesirable 8-chloro-2,6-methano-2H-3,4,5,6-tetrahydro-1-benzoxocin-10-carboxylic.

    摘要翻译: 本发明涉及2-氯 - 顺式 - [5a(S)-9a(S) - (5a,6,7,8,9,9a-六氢)]二苯并呋喃-4-羧酸的合成 没有不合需要的8-氯-2,6-亚甲基-2H-(3,4,5,6-四氢-1-苯并二氧杂环己烯-10-羧酸)的立体定向催化杂化合成合成。