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Highly efficient synthesis of unsymmetrical 1,3-diynes from organoalane reagents and alkynyl bromides mediated by a nickel catalyst

机译:由镍催化剂介导的有机铝烷试剂和炔基溴化物高效合成不对称1,3-二炔

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Highly efficient and simple cross-coupling reactions of alkynylbromides with organoalane reagents for the synthesis of unsymmetrical 1,3-diynes derivatives using Ni(OAc)2 (2–5 mol%)/(o-furyl)3P (4–10 mol%) as a catalyst are reported. Excellent yields (up to 94%) were obtained for a wide range of substrates at rt or 60 °C for 2–3 h in Et2O or toluene.
机译:Ni(OAc) 2 (2-5 mol%),炔基溴化物与有机烷烃试剂的高效简单交叉偶联反应,用于合成不对称的1,3-二炔衍生物报道了作为催化剂的)/( o -呋喃基) 3 P(4-10 mol%)。在Et 2 O或甲苯中于rt或60°C的各种底物在rt或60°C下进行2–3 h可获得优异的收率(高达94%) 。

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