Synthesis of N,N'-bis (2-hydroxyethyl) ethylenediamines

摘要

A method is provided for preparing N,N'-bis(2-hydroxyethyl)ethlyenediamines and, in particular, 2,2-[ethanediylbis(alkylimino)]bisethanol which is a potential precursor to triazacyclononane rings. These ring systems are useful as a ligand with manganese in a catalyst for bleaching. The method involves hydrogenating a bioxazolidine compound in the presence of hydrogen, a solvent and a supported catalyst. Also covered is a route to bioxazolidines from amino alcohol.