Assembly of the Bis(imidazolyl)propene Core of Nagelamides C and S by Double Grignard Reaction
作者:Nicolas Jacobi、Thomas Lindel
DOI:10.1002/ejoc.201000625
日期:——
1-bis(imidazolyl)-propenes were assembled in a facile manner by double Grignard reaction of metalated imidazoles with saturated esters, followed by dehydration. The presence of nitrile functions or acryl esters in the electrophile component leads to competing reactions, whereas propargyl esters are tolerated. Introduction of 2-amino groups was possible via the corresponding dimethylsulfamoyl-protected