EFFICIENT PREPARATION OF 2-IMIDAZOLINES FROM ALDEHYDES AND ETHYLENEDIAMINES WITH 1,3DIIODO-5,5- DIMETHYLHYDANTOIN

摘要

Various 2-imidazolines were prepared in high yields by reacting aldehydes and ethylenediamines with 1,3-diiodo-5,5-dimethylhydantoin. Moreover, chiral 1,3-bis(imidazolin-2'-yl)benzene and 2,6-bis(imidazolin-2'-yl)-pyridines, which function as a chiral ligand, could be directly obtained from corresponding dialdehydes in high yields.