222020-18-0Relevant articles and documents
Spacer-chromoionophores - Polymethine dye substituted aza-crown ethers with increased complexation ability
Boila-Goeckel, Andrei,Junek, Hans
, p. 20 - 28 (2007/10/03)
Aromatic aldehyde derivatives of N-phenyl-aza-15-crown-5 2, N-phenyl-aza-18-crown-6 8, and benzo-15-crown-5 10 are condensed with malononitrile and 2-amino-1,1,3-tricyano-1-propene to give light yellow to orange colored crown ether derivatives 4, 5a, 9a,