×

Methods of preparing manganese complexes of nitrogen-containing macrocyclic ligands

  • US 5,610,293 A
  • Filed: 05/16/1995
  • Issued: 03/11/1997
  • Est. Priority Date: 07/19/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. Method of making a compound represented by the formula ##STR7## wherein R is selected from the group consisting of alkyl having 2 to 22 carbon atoms, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, aryl and aralkyl radicals comprising:

  • a) reducing an amino acid amide to produce the corresponding substituted ethylenediamine;

    b) tosylating the diamine to produce the corresponding di-N-tosyl derivative;

    c) reacting the di-N-tosyl derivative with a di-O-tosylated tris-N-tosylated triazaalkane diol to produce the corresponding substituted N-pentatosylpentaazacycloalkane;

    d) removing the tosyl groups; and

    e) recovering the resulting compound.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×