Synthesis of New Tetraazacrown Ethers Capable of Forming Metal Ion Ligating Agents Containing Two Fluoroionophores or Chromoionophores.
Abstract
Four tetraazacrown ethers containing two unsubstituted ring nitrogen atoms were prepared via The crab-like cyclization reaction of two diamines with two bis-a-chloroamides followed by reduction of the resulting macrocyclic diamides. Thus, N,N'-dimethyltetraaza-15- crown-5 (12), N,N'-dimethyltetraaza- 16-crown-5 (13), N,N'-dimethyltetraazathia-15-crown-5 (14), and N,N'-dimethyltetraazathia-l6-crown-5 (15) macrocyclic ligands were prepared. X-ray crystal structures were determined for the macrocyclic diamide intermediates leading to 13 and 14.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 08, 1999
- Accession Number
- ADA360903
Entities
People
- J. S. Bradshaw
- K. E. Krakowiak
- N. K. Dalley
- P. B. Savage
- Zhengyu Yang
Organizations
- Brigham Young University