Rhodium-Catalyzed Direct Alkenylation and Arylation of Arene C−H Bonds via Decarbonylation of Cinnamoyl Chlorides, Cinnamic Anhydrides, and Poly(aroyl) Chlorides
作者:Wenjing Ye、Ning Luo、Zhengkun Yu
DOI:10.1021/om900997y
日期:2010.2.22
Efficient regioselective direct alkenylation of benzo[h]quinoline was realized with cinnamoyl chlorides as the coupling partners via decarbonylation of the chlorides and C-H bond activation by means of [Rh(CO)(2)Cl](2) as the catalyst in refluxing o-oxlene under phosphine-free conditions. For 2-phenylpridine, [Rh(CO)(2)Cl](2) or [Rh(COD)Cl](2) efficiently promoted its direct alkenylation with cinnamic anhydrides. Polyarenes were synthesized from [Rh(COD)Cl](2)-catalyzed decarbonylative poly(arylation) of isophthaloyl dichloride, terephthaloyl dichloride, or benzene-1,3,5,-tricarbonyl chloride with benzo[h] quinoline.
RuCl<sub>3</sub>⋅<i>x</i> H<sub>2</sub>O-Catalyzed Direct Arylation of Arenes with Aryl Chlorides in the Presence of Triphenylphosphine
作者:Ning Luo、Zhengkun Yu
DOI:10.1002/chem.200902612
日期:2010.1.18
A simple, efficient, and economically attractive catalytic system has been developed for the directarylation of arenes with arylchlorides with the RuCl3⋅xH2O/PPh3/Na2CO3/N‐methyl‐2‐pyrrolidone system (see scheme). A remarkable effect of the nature of the base was observed, with Na2CO3 giving the best results.
一个简单的,高效和经济上有吸引力的催化体系已被开发用于芳烃的与和的RuCl芳基氯的直接芳基化3 ⋅ X ħ 2 O / PPH 3 /钠2 CO 3 / Ñ甲基-2-吡咯烷酮系统(参见方案)。观察到了碱性质的显着影响,其中Na 2 CO 3给出了最佳结果。