An NMR study of merocyanine-type dyes derived from barbituric acid.
The 13C NMR of two solvatochromic dyes derived from a barbituric acid acceptor and dimethylaminophenyl donor fragments, compound 1 and the related merocyanine 2, were recorded in various solvents. The observed chemical-shift variations were used to interpret their structural differences and solvatochromic behavior in solution.
Rezende
Marcos Caroli
MC
Facultad de Química y Biología, Universidad de Santiago, Casilla 40, Correo 33, Santiago, Chile. mcaroli@lauca.usach.cl
Flores
Patricio
P
Guerrero
Juan
J
Villarroel
Luis
L
D001463:Barbiturates / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D004563:Electrochemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011744:Pyrimidinones / Q000737:chemistry*; D012996:Solutions
D001463:Barbiturates; D004396:Coloring Agents; D011744:Pyrimidinones; D012996:Solutions; C003954:merocyanine dye; C032232:barbituric acid