A Mild and Efficient Palladium-Catalyzed Cyanation of Aryl Mesylates in Water or tBuOH/Water
作者:Pui Yee Yeung、Chau Ming So、Chak Po Lau、Fuk Yee Kwong
DOI:10.1002/anie.201005121
日期:2010.11.15
Cool and compatible: Aryl mesylates and tosylates underwent palladium‐catalyzed cyanation under mild, aqueous conditions at 65–80 °C (see scheme). In many cases, water could be used as the reaction medium without a cosolvent, and a variety of substituents R, such as keto, aldehyde, ester, free amine, and nitrile groups, remained intact during the transformation. Cy=cyclohexyl, Ms=methanesulfonyl,
凉爽且相容:芳基甲磺酸酯和甲苯磺酸酯在65-80°C的温和水溶液条件下经历了钯催化的氰化反应(请参见方案)。在许多情况下,可以将水用作没有助溶剂的反应介质,并且在转化过程中,各种取代基R(例如酮,醛,酯,游离胺和腈基)保持完整。Cy =环己基,Ms =甲磺酰基,Ts =对甲苯磺酰基。