申请人:Pilkington PLC
公开号:US05623005A1
公开(公告)日:1997-04-22
A naphthopyran compound of general formula (I) ##STR1## wherein R.sub.1 represents a group of the formula --NR.sub.2 R.sub.3 wherein each of R.sub.2 and R.sub.3, which may be the same or different, independently represents an alkyl group, or a carbocyclic or heterocyclic group, or R.sub.2 and R.sub.3 taken together with the nitrogen atom to which they are attached represent a heterocyclic ring having one or more hetero atoms and which may optionally carry at least one substituent selected from alkyl, aryl, or heteroaryl groups; each of R.sub.4 and R.sub.5, which may be the same or different, independently represents an alkyl, alkenyl, carbocyclic or heterocyclic group, or R.sub.4 and R.sub.5 taken together with the carbon atom to which they are attached form a carboxylcyclic ring or a heterocyclic ring; and R.sub.6 represents a hydrogen atom or a substituent selected from alkyl, alkoxy, aryl, aryloxy, heteroaryl, halogen, a group of formula R.sub.1 as defined above, azo, imino, amide, carboxylate, ester, cyano, trifluoromethyl or nitro, and in addition R.sub.6 may represent a carbocyclic or heterocyclic ring fused to ring A. The naphthopyran compounds of the invention are useful as photochromic materials in lenses, e.g. sunglasses, and photochromic transparencies for cars and aircraft. The invention also provides, as new intermediate compounds, amine-substituted chloro-naphthols and amine-substituted naphthols.
通用式(I)的萘吡喃化合物##STR1##其中R.sub.1代表式--NR.sub.2 R.sub.3的基团,其中R.sub.2和R.sub.3分别表示独立的烷基基团,或者是碳环或杂环基团,或者R.sub.2和R.sub.3与它们连接的氮原子一起表示具有一个或多个杂原子的杂环环,可以选择地携带来自烷基、芳基或杂芳基团中至少一个取代基;R.sub.4和R.sub.5,可以相同也可以不同,分别表示独立的烷基、烯基、碳环或杂环基团,或者R.sub.4和R.sub.5与它们连接的碳原子一起形成一个羧环或杂环环;R.sub.6表示氢原子或者从烷基、烷氧基、芳基、芳氧基、杂芳基、卤素、上述所定义的R.sub.1的基团、偶氮、亚胺、酰胺、羧酸酯、酯、氰基、三氟甲基或硝基中选择的取代基,并且此外R.sub.6可以表示与环A融合的碳环或杂环环。本发明的萘吡喃化合物可用作镜片中的光致变色材料,例如太阳镜,以及汽车和飞机的光致变色透明材料。本发明还提供了作为新中间体化合物的胺取代氯萘酚和胺取代萘酚。