TRACELESS DIRECTING GROUPS IN RADICAL CASCADES: FROM OLIGOALKYNES TO FUSED HELICENES WITHOUT TETHERED INITATORS
    5.
    发明申请
    TRACELESS DIRECTING GROUPS IN RADICAL CASCADES: FROM OLIGOALKYNES TO FUSED HELICENES WITHOUT TETHERED INITATORS 有权
    无轨道导轨组合:从低压开关到未熔接的连接器

    公开(公告)号:US20160145276A1

    公开(公告)日:2016-05-26

    申请号:US14930860

    申请日:2015-11-03

    IPC分类号: C07F7/22 C07C1/32

    摘要: The present disclosure is directed to a traceless directing group in a radical cascade. The chemo- and regioselectivity of the initial attack in skipped oligoalkynes is controlled by a propargyl alkoxy moiety. Radical translocations lead to the boomerang return of radical center to the site of initial attack where it assists to the elimination of the directing functionality via β-scission in the last step of the cascade. In some aspects, the reaction of the present invention is catalyzed by a stannane moiety, which allows further via facile reactions with electrophiles as well as Stille and Suzuki cross-coupling reactions. This selective radical transformation opens a new approach for the controlled transformation of skipped oligoalkynes into polycyclic ribbons of tunable dimensions.

    摘要翻译: 本公开涉及一种无级联的无级引导组。 跳过的寡聚炔烃的初始攻击的化学和区域选择性由炔丙基烷氧基部分控制。 激进的易位导致自由基中心返回到初始攻击的地点,从而有助于在级联的最后一个步骤中消除引导功能。 在一些方面,本发明的反应由锡烷部分催化,其允许进一步通过亲电子反应以及Stille和Suzuki交叉偶联反应。 这种选择性的基因转换开辟了一种新方法,可以将跳过的寡核苷酸控制转化为可调节尺寸的多环带。