Spiropiperidinenaphtoxazine compounds represented by general formula (I) are useful as photochromic compounds, wherein (a) R1 represents a C1-18alkyl group, an optionally substituted C7-15 aralkyl group, a C1-10 alkenyl group, or an optionally substituted C6-15 aryl group; (b) R2 to R9 are the same as defined for R1, or each represents a hydrogen atom or is bound to each other to form a C5-10 alicyclic ring, norbornyl or adamantyl on the same skeletal carbon atom or between adjacent (o-position) skeletal carbon atoms; (c) Rio represents a hydrogen atom, a C1-18 alkyl group, a C7-15 aralkyl group which may be optionally substituted, or a C1-10 alkenyl group; and (d) R11 to R16 each represents a hydrogen atom, a C1-9 alkyl, C1-5 alkoxy, halogen, nitro or cyano group.
通式(I)代表的
哌啶基萘并噁嗪化合物可用作光致变色化合物,其中 (a) R1 代表 C1-18 烷基、任选取代的 C7-15 芳烷基、C1-10 烯基或任选取代的 C6-15 芳基;(b) R2 至 R9 与 R1 的定义相同,或各自代表一个氢原子,或相互结合在同一骨架碳原子上或相邻(邻位)骨架碳原子之间形成一个 C5-10 脂环、降
冰片烷基或
金刚烷基;(c) Rio 代表氢原子、C1-18 烷基、可任选取代的 C7-15 芳烷基或 C1-10 烯基;以及 (d) R11 至 R16 各自代表氢原子、C1-9 烷基、C1-5 烷氧基、卤素、硝基或
氰基。