Easy synthesis of a new C2-symmetric diaza-crown ether from L-threonine
作者:Jean-Pierre Joly、Gerhard Schröder
DOI:10.1016/s0040-4039(97)10254-4
日期:1997.11
The 1:1-cyclocondensation of a contrafunctional chiral amine easily obtained from L-threonine in four steps yielded the new C-2-symmetric diaza-crown ether 5. (C) 1997 Elsevier Science Ltd.