The synthesis and photochromic properties of 1,3,3-trimethylspiro[indoline-2,3′-naphtho[2,1-b][1,4]oxazin]-6′-amine, a novel red-colouring photochromic spirooxazine and derivatives is reported. The synthesis proceeds via an unusual one-pot transamination, oxime formation, N–O bond cleavage, spirooxazine formation process.

中文翻译：

---

新型红色光致变色螺恶嗪1,3,3-三甲基螺[吲哚啉-2,3'-萘[2,1- b ] [1,4]恶嗪] -6'-胺的合成及性质

新型红色光致变色螺恶嗪1,3,3-三甲基螺[吲哚啉-2,3'-萘并[2,1- b ] [1,4]恶嗪] -6'-胺的合成及光致变色性能有衍生产品报道。合成过程通过不寻常的一锅转氨反应，肟形成，N–O键裂解，螺恶嗪形成过程进行。