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.
通式(I)的萘并吡喃化合物##STR1##其中,R.sub.1代表式--NR.sub.2R.sub.3的基团,其中R.sub.2和R.sub.3各自独立地表示烷基,或者是碳环或杂环基团,或者R.sub.2和R.sub.3与它们所连接的氮原子共同表示具有一种或多种杂原子的杂环,该杂环可以选择地携带至少一个取自烷基、芳基或杂芳基团的取代基;R.sub.4和R.sub.5各自独立地表示烷基、烯基、碳环或杂环基团,或者R.sub.4和R.sub.5与它们所连接的碳原子共同形成一个羧环或杂环;R.sub.6表示氢原子或者取代基,所述取代基选择自烷基、烷氧基、芳基、芳氧基、杂芳基、卤素、式R.sub.1(如上所定义)、偶氮、亚胺、酰胺、羧酸盐、酯、腈、三氟甲基或硝基,并且此外,R.sub.6还可以表示与A环融合的碳环或杂环。该发明的萘并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。该发明还提供了新的中间体化合物,即氨基取代的氯萘酚和氨基取代的萘酚。