《表2 芳基硼酸与卤代苯的Suzuki偶联反应 (催化剂为1和2)》

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《基于纳米二氧化硅与MCM-41的两种多相钯催化剂的合成及其在Suzuki反应中的应用（英文）》

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（GC，Gas chromatograph yield.*Column yield）

In order to demonstrate the efficiency and the scope of the catalysts（1，2），several kinds of aryl halides and arylboronic acids were employed under the optimal reaction conditions to produce the corresponding biphenyls.As shown in Tab.2，under the same conditions，using catalyst 1 and 2 is almost the same for most reactions.When chlorobenzene was used，the yields are very low.Even if the reaction temperature is increased to 80℃，the yields of the reactions are still not high（Entry 2，3 and11，12）.When the aryl boric acid contains halogen substituents（F，Cl），the yields are also significantly reduced（Entry 8，9 and 17，18）.Furthermore，when brominated aryl and iodide aryl compounds react with benzene boric acid（Entry 4～7 and 13～16），the yields are usually good.