Process for the cyanation aldehydes
    4.
    发明授权
    Process for the cyanation aldehydes 失效
    氰化醛的工艺

    公开(公告)号:US07314844B2

    公开(公告)日:2008-01-01

    申请号:US11114068

    申请日:2005-04-26

    IPC分类号: B01J31/36

    摘要: A process for cyanating an aldehyde is provided. The process comprises reacting the aldehyde with: i) a cyanide source which does not comprise a Si—CN bond or a C—(C═O)—CN moiety; and ii) a substrate susceptible to nucleophilic attack not comprising a halogen leaving group; in the presence of a chiral catalyst. Preferably, the chiral catalyst is a chiral vanadium or titanium catalyst. The cyanide source is preferably an alkali metal cyanide and the substrate susceptible to nucleophilic attack not comprising a halogen leaving group is a carboxylic anhydride.

    摘要翻译: 提供了一种氰化醛的方法。 该方法包括使醛与:i)不包含Si-CN键或C-(C-O)-CN部分的氰化物源反应; 和ii)对不包含卤素离去基团的亲核攻击敏感的底物; 在手性催化剂的存在下。 优选地,手性催化剂是手性钒或钛催化剂。 氰化物源优选为碱金属氰化物,并且对不含卤素离去基团的亲核侵袭敏感的底物是羧酸酐。