作者:Jared W. Rigoli、Cale D. Weatherly、Juliet M. Alderson、Brian T. Vo、Jennifer M. Schomaker
DOI:10.1021/ja406654y
日期:2013.11.20
Organic N-containing compounds, including amines, are essential components of many biologically and pharmaceutically important molecules. One strategy for introducing nitrogen into substrates with multiple reactive bonds is to insert a monovalent N fragment (nitrene or nitrenoid) into a C H bond or add it directly to a C=C bond. However, it has been challenging to develop well-defined catalysts capable of promoting predictable and chemoselective aminations solely through reagent control. Herein, we report remarkable chemoselective aminations that employ a single metal (Ag) and a single ligand (phenanthroline) to promote either aziridination or C H insertion by manipulating the coordination geometry of the active catalysts.
Carbamate mediated 1,3-asymmetric induction. A stereoselective synthesis of acyclic 1,3-diol systems
作者:Masahiro Hirama、Mitsuko Uei
DOI:10.1016/s0040-4039(00)85825-6
日期:1982.1
A highly regio- and stereo-selective functionalization of homoallylic carbamates with iodine is reported. The reaction has been applied to the preparation of key 1,3,5-triol intermediate 2 employed in the synthesis of compactin (1).