The invention relates to a method for obtaining β-amino alcohols, in which the following steps are performed using amines and a diol/water mixture: adding the diol/water mixture; subsequently, carrying out the reaction at a temperature between 130 and 200°C, for between 2 and 24 hours; filtering the reaction product, comprising β-amino alcohol, using at least one first hexane extraction method, followed by at least one second ethyl acetate extraction method, in order to purify the resulting β-amino alcohol.
Effect of Nuclear Substitution on the Reaction of Aromatic Amines with Ethylene Oxide
作者:MORRIS FREIFELDER、GEORGE R. STONE
DOI:10.1021/jo01064a039
日期:1961.5
β-Amino alcohols from anilines and ethylene glycol through heterogeneous Borrowing Hydrogen reaction
作者:Pedro J. Llabres-Campaner、Rafael Ballesteros-Garrido、Rafael Ballesteros、Belén Abarca
DOI:10.1016/j.tet.2017.08.006
日期:2017.9
Borrowing Hydrogen (BH), also called Hydrogen Autotransfer (HA), reaction with neat ethylene glycol represents a key step in the preparation of β-amino alcohols. However, due to the stability of ethylene glycol, mono-activation has rarely been achieved. Herein, a combination of Pd/C and ZnO is reported as heterogeneous catalyst for this BH/HA reaction. This system results in an extremely air and moisture