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嗜血風(fēng)鈴新蟲 (小有名氣)
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To probe the substrate scope of the reaction, more aryl iodides and bromides were chosen to react with phenylactylene using 1 mol % catalyst 3a with 2 eq K2CO3 in DMSO (2 mL) in air (Table 3). The results showed that 3a could not only catalyze the cross-coupling reaction of phenylacetylene with more reactive aryl iodides, but also could catalyze the reaction in good to moderate yield (55% -86%) with less reactive aryl bomides in the absence of copper co-catalysis. To an oven-dried 50 mL of r.b.f. containing 2a , PdCl2 , K2CO3 and NaBr with a septum was injected into pyridine (5 mL) under argon. |
至尊木蟲 (知名作家)
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為了探測反應(yīng)的底物范圍,用更多芳基碘化物和溴化物與苯乙炔反應(yīng),反應(yīng)調(diào)節(jié)為1摩爾%的催化劑3a和2當量的K2CO3在DMSO(2mL)及空氣條件下進行(表3)。結(jié)果表明,3a不僅可以催化苯乙炔與多個反應(yīng)性芳基碘發(fā)生交叉偶聯(lián)反應(yīng),也可以在無銅共催化存在條件下催化苯乙炔與反應(yīng)性低的芳基溴化物發(fā)生反應(yīng),產(chǎn)率中等到良好(55%-86%)。 在帶隔膜干燥烘箱中,向含有2a、PdCl2、K2CO3和溴化鈉的50毫升r.b.f.在氬氣條件下注入吡啶(5毫升)。 |
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