Easy preparation of enantiopure C2-symmetrical aminoalcohols derived from m-xylylene diamine.
作者:José M. Andrés、Mar'ia A. Martínez、Rafael Pedrosa、Alfonso Pérez-Encabo
DOI:10.1016/s0957-4166(00)80484-x
日期:1994.1
The title compounds were prepared by condensation of isophthaldehyde with chiral amino alcohols or α-amino esters in three different ways depending on the substitution pattern. These methods are: for N-substituted amino alcohols, by reduction of the epimeric mixtures of 1,3-oxazolidines formed in the condensation process; for unsubstituted ones, by reduction of the corresponding hydroxy imines, followed
标题化合物的制备是根据取代方式,用三种不同的方法将异乙醛与手性氨基醇或α-氨基酯缩合而成。这些方法是:对于N-取代的氨基醇,通过还原缩合过程中形成的1,3-恶唑烷的差向异构混合物;对于未取代的那些,通过还原相应的羟基亚胺,然后进行N-烷基化;对于与氨基酯缩合得到的亚胺,是通过顺序还原并与甲基碘化镁反应而得到的。