A process for the preparation of a polycyclic dye of Formula (1):
by reacting a compound of Formula (2):
with a benzofuranone of Formula (3):
wherein:
R¹ and R²each independently is -H or alkyl;
R³is alkyl;
R⁴is -H or alkyl;
R⁵ and R⁶each independently is alkyl; or
R⁵ and R⁶together with the N atom to which they are attached form a heteroalicyclic ring; and
Ring Ais unsubstituted or is substituted by from one to three substituents
provided that at least one of R¹, R² and R⁴ is -H.
The polycyclic dyes of Formula (1) are useful for the coloration of synthetic textiles such as polyester to which they impart blue to navy shades.
一种制备式(1)多环
染料的工艺:
使式(2)化合物反应:
与式 (3) 的
苯并呋喃酮反应:
其中
R¹ 和 R² 各自独立地为-H 或烷基;
R³ 是烷基
R⁴是-H 或烷基;
R⁵和R⁶各自独立地为烷基;或
R⁵和R⁶连同它们所连接的N原子形成一个杂脂环;和
环 A 未被取代或被一至三个取代基取代
条件是 R¹、R² 和 R⁴ 中至少有一个是-H。
式(1)的多环
染料可用于合成纺织品(如聚
酯)的着色,使其呈现蓝色至深蓝色。