申请人:TORAY INDUSTRIES, INC.
公开号:EP0171909A1
公开(公告)日:1986-02-19
A spiro-oxazine compound of the formula (A):
wherein R1, R2, R3, R4, R5, R6 and R7 independently represent hydrogen, (C1 or 2) alkyl, halogenated C1-2 alkyl, C1-2 alkoxy, halogen or nitro, R is unsubstituted or substituted phenyl or naphthyl, and n is 1 to 5, is valuable as a photochromic material and exhibits enhanced fatigue resistance in photocolorability.
The spiro-oxazine compound is prepared by reacting a precursor of the spiro-oxazine compound of the formula (A), which has a substituent of the formula:
-(CH2)n- R
in the nitrogen atom of the indoline nucleus, with an α-nitroso-β-naphthol.
一种式(A)的螺嗪化合物:
其中 R1、R2、R3、R4、R5、R6 和 R7 独立地代表氢、(C1 或 2)烷基、卤代 C1-2 烷基、C1-2 烷氧基、卤素或硝基,R 是未取代或取代的苯基或萘基,n 是 1 至 5,该化合物作为光致变色材料非常有价值,在光致变色性方面具有更强的抗疲劳性。
螺噁嗪化合物的制备方法是将具有以下取代基的式(A)螺噁嗪化合物前体进行反应:
-(CH2)n- R
的前体与 α-亚硝基-β-萘酚反应。