Synthesis of Phosphonobenzocarbacephems by Intramolecular Radical Cyclization of Haloaryl-Substituted β-Lactams
作者:Sarah Van der Jeught、Kurt G. R. Masschelein、Christian V. Stevens
DOI:10.1002/ejoc.200901351
日期:2010.3
A series of benzo-fused tricyclic β-lactams, most of them phosphonobenzocarbacephems, were prepared in a straightforward way starting from phosphonoazadienes. In this paper, the synthetic route including a Staudinger reaction towards the β-lactams, followed by radical ring closing with tributyltin hydride and AIBN, which resulted in the envisaged tricyclic compounds, is reported.
Double Nucleophilic 1,2-Addition of Silylated Dialkyl Phosphites to 4-Phosphono-1-aza-1,3-dienes: Synthesis of γ-Phosphono-α-aminobisphosphonates
作者:Kurt G. R. Masschelein、Christian V. Stevens
DOI:10.1021/jo701718t
日期:2007.11.1
[Graphics]gamma-Phosphono-alpha-aminobisphosphonates were synthesized from a new class of 4-phosphono-1-aza-1,3-dienes by the addition of dialkyl trimethylsilyl phosphites to these azadienes in the presence of acid. Depending on the steric demand of the group on nitrogen, double 1,2-addition or tandem 1,4-1,2-addition occurred.
de Viguerie Nancy Lauth, Willson Michele, Perie Jacques, New J. Chem, 18 (1994) N 11, S 1183-1195
作者:de Viguerie Nancy Lauth, Willson Michele, Perie Jacques
DOI:——
日期:——
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。