LEWIS ACID CATALYZED HALOGENATION OF ACTIVATED CARBON ATOMS
申请人:Zhang Yanhua
公开号:US20080275253A1
公开(公告)日:2008-11-06
A practical and efficient method for halogenation of activated carbon atoms using readily available N-haloimides and a Lewis acid catalyst has been disclosed. This methodology is applicable to a range of compounds and any halogen atom can be directly introduced to the substrate. The mild reaction conditions, easy workup procedure and simple operation make this method valuable from both an environmental and preparative point of view.
iron-catalyzed cross-electrophile coupling of aryl chlorides with unactivated alkylchlorides via an iron/B2pin2 catalytic system has been developed. (Hetero)aryl chlorides undergo this transformation smoothly under mild conditions, furnishing the alkylated products with good efficiency. This protocol features excellent functional group compatibility and gram-scale synthesis, which also enables the late-stage functionalization