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双铑(Ⅱ)/Xantphos催化的C—H官能团化/烯丙基烷基化串联:从N-芳基-α-重氮-β-酮酯简便制备3-酰基-3-烯丙基氧化吲哚衍生物 被引量:1
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作者 李芳洁 卢斌 +1 位作者 刘阳 王晓明 《有机化学》 SCIE CAS CSCD 北大核心 2022年第10期3390-3397,共8页
从易于获得的N-芳基-α-重氮-β-酮酰胺和烯丙基化合物出发,利用新型的[Rh2]/Xantphos催化体系一锅法合成了各种3-酰基-3-烯丙基的氧化吲哚衍生物.这项工作的优点包括操作简便、反应条件温和、官能团兼容性良好和产物易于衍生化等.初步... 从易于获得的N-芳基-α-重氮-β-酮酰胺和烯丙基化合物出发,利用新型的[Rh2]/Xantphos催化体系一锅法合成了各种3-酰基-3-烯丙基的氧化吲哚衍生物.这项工作的优点包括操作简便、反应条件温和、官能团兼容性良好和产物易于衍生化等.初步的机理研究表明,该反应可能经历卡宾诱导的C—H官能团化和Rh(Ⅱ)/Xantphos催化的烯丙基烷基化串联过程.此外,选择Xantphos作为配体对于实现体系中的烯丙基烷基化过程至关重要. 展开更多
关键词 双铑络合物 重氮化合物 氧化吲哚 季碳中心 接力催化
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Paddlewheel dirhodium(II)complexes with N-heterocyclic carbene or phosphine ligand:New reactivity and selectivity
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作者 Biqiong Hong Lei Shi +2 位作者 Lin Li Shuming Zhan Zhenhua Gu 《Green Synthesis and Catalysis》 2022年第2期137-149,共13页
The dirhodium(II)-catalyzed organic reactions,including asymmetric transformation,are significantly benefitted from the discovery of simple and efficient protocols to introduce various bridging ligands,e.g.carboxylic ... The dirhodium(II)-catalyzed organic reactions,including asymmetric transformation,are significantly benefitted from the discovery of simple and efficient protocols to introduce various bridging ligands,e.g.carboxylic acids,amide and phosphoric acids.Ligands lying at axial position of dirhodium(II)complexes could strongly affect the activity and selectivity of these metal complexes involved reactions.This review summarizes the newly explored reactivity of dirhodium(II)complexes with N-heterocyclic carbenes or phosphines as the axial ligands.The asymmetric tries are also highlighted,where their stereo-induction were solely from the axial ligand of dirhodium(II)complexes.In the last part,the reactions catalyzed by inherent chiral ortho-metalated dirhodium(II)/phosphine complexes are also discussed. 展开更多
关键词 dirhodium(ii) Axial ligand NHC carbene PHOSPHINE ENANTIOSELECTIVITY Remote control
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