Synthesis of unsymmetrical biaryls via kinetic higher order cyanocuprates: scope, limitations, and spectroscopic insights
作者:Bruce H. Lipshutz、Konstantin Siegmann、Emiliano Garcia、Frank Kayser
DOI:10.1021/ja00073a051
日期:1993.10
Treatment of lower order arylcyanocuprates ArCu(CN)Li with 1 equiv of an aryllithium (Ar'Li) at temperatures around -125 o C leads to higherorder reagents Ar(Ar')Cu(CN)Li 2 . Upon exposure of such reagents at this temperature to ground-state molecular oxygen, good yields of the unsymmetrical biaryl Ar-Ar' can be realized. Several different types of aryl ligands have been examined, including naphthalenes
在 -125 o C 左右的温度下,用 1 当量的芳基锂 (Ar'Li) 处理低级芳基氰铜酸盐 ArCu(CN)Li 会产生高级试剂 Ar(Ar')Cu(CN)Li 2 。在该温度下将此类试剂暴露于基态分子氧后,可以实现不对称联芳基 Ar-Ar' 的良好产率。已经检查了几种不同类型的芳基配体,包括萘,以评估该方法的通用性。已经在 -130 o C 和更高温度下获得了三种不同铜酸盐的光谱数据( 13 C NMR),以确定它们的动力学性质(如合成化学所示)是否可以通过物理方法证实
Asymmetric synthesis of naproxen via a pinacol-type reaction
作者:Jack D. Brown
DOI:10.1016/s0957-4166(00)86058-9
日期:1992.12
An asymmetric pinacol-type rearrangement was used in the synthesis of (S)-naproxen. The pinacol-type reaction of a vicinal diol provided an α-aryl ketone which was oxidized with sodium hypochlorite in the presence of methanol to the methyl ester of naproxen.
Naphthylglycyl and tetrahydronaphthylglycyl cephalosporins are potent antibacterial agents and are particularly useful as oral treatments for upper respiratory infections.
Optically active 1-(6-methoxy-2-naphthyl)-2-alkoxycarbonyl)amino-1-propanone, its derivatives and their halo anlogs, and methods for their manufacture
申请人:SYNTEX PHARMACEUTICALS
INTERNATIONAL LIMITED
公开号:EP0091757A1
公开(公告)日:1983-10-19
A manufacturing method is described for the preparation of optically active 1-(6-methoxy-2-naphthyl)-2-(alkoxycarbonyl)amino-1-propanone
its derivatives and their halo analogs. These compounds are useful intermediates in the preparation of 2-(6-methoxy-2-naphthyl)propionic acid, which is useful pharmaceutically, e.g. as an anti-inflammatory, analgesic and anti-pyretic agent.
Improvements in or relating to naphthylglycyl cephalosporin derivatives
申请人:ELI LILLY AND COMPANY
公开号:EP0122155A2
公开(公告)日:1984-10-17
Naphthylglycyl and tetrahydronaphthylglycyl cephalosporins are potent antibacterial agents and particularly useful in the oral treatment of upper respiratory infections.