Synthesis of Disperse Dyes from Pyridone and Resorcinol Coupled to Diazotized 2-Amino-4-chloro-5-formylthiazole and Application to Polyester

Table 1

Yield, color, and melting points of dyes derived from the diazo component.

Dye	Coupling component (R1)	Yield (%)	Colour of crystals	Molecular weight (g)	Melting point (°C)
Dye 1		81	Brown	395.5	187–189
Dye 2		89	Purple	283.5	289