β‐Diazocarbonyl Compounds: Synthesis and their Rh(II)‐Catalyzed 1,3 C−H Insertions
作者:Liyin Jiang、Zhaofeng Wang、Melanie Armstrong、Marcos G. Suero
DOI:10.1002/anie.202015077
日期:2021.3.8
of ketone silyl enol ethers with diazomethyl‐substituted hypervalent iodine reagents that gives access to unusual β‐diazocarbonyl compounds. The potential of this unexplored class of diazo compounds for the development of new reactions was demonstrated by the discovery of a rare Rh‐catalyzed intramolecular 1,3 C−H carbene insertion that led to complex cyclopropanes with excellent stereocontrol.
Direct Access to β-Oxodiazo Compounds by Copper(II)-Catalyzed Oxidative Rearrangement of Stabilized Vinyl Diazo Derivatives
作者:José Barluenga、Giacomo Lonzi、Lorena Riesgo、Miguel Tomás、Luis A. López
DOI:10.1021/ja208965b
日期:2011.11.16
The copper(II)-catalyzed reaction of alkenyldiazo compounds with iodosylbenzene leading to β-oxodiazo derivatives is reported. This process occurs via an unprecedented 1,2-shift of the diazoacetate function. A selection of the synthetic applications of a representative member of this new class of functionalized diazo derivatives in the regioselective synthesis of substituted 1,4-dicarbonyl compounds
报道了烯基重氮化合物与碘代苯在铜 (II) 催化下反应生成 β-氧代重氮衍生物。这个过程是通过重氮乙酸酯功能前所未有的 1,2-转变发生的。还报道了这类新型官能化重氮衍生物的代表性成员在取代 1,4-二羰基化合物的区域选择性合成中的合成应用选择。