PURPOSE:To obtain a new compound, useful as a thermochromic and a photochromic materials and capable of simultaneously achieving purification of a coloring type component and fixation of a colored state. CONSTITUTION:A compound expressed by formula I (R1 is 1-20C alkyl, aralkyl, methacryloxymethyl, etc.; R2 to R5 are H, 1-6C alkyl, aryl, aralkyl, 1-5C alkoxy, halogen, etc.; R6 and R7 are H, 1-6C alkyl, aryl, aralkyl, cyano, etc,; R8 is H, 1-6C alkyl, chloromethyl, etc.; Y is O or S), e.g. 3-chloromethyl-5- nitrosalicylaldehyde. The compound expressed by formula I is obtained by dissolving an indolinospirobenzopyran derivative expressed by formula II in a polar organic solvent (e.g. methanol) and then irradiating the resultant solution with ultraviolet light, e.g. by using an ultrahigh-pressure mercury lamp.
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机译：目的：获得一种新型化合物，可用作热致变色和光致变色材料，并且能够同时实现着色型组分的纯化和着色状态的固定。组成：由式I表示的化合物（R 1为1-20C烷基，芳烷基，甲基丙烯酰氧基甲基等; R 2至R 5为H，1-6C烷基，芳基，芳烷基，1-5C R 6和R 7为H，1-6C烷基，芳基，芳烷基，氰基等; R 8为H，1-6C烷基，氯甲基等;烷氧基，卤素等; R 6和R 7为H，1-6C烷基，芳基，芳烷基，氰基等。 Y是O或S），例如3-氯甲基-5-亚硝基水杨醛。式Ⅰ表示的化合物是通过将式Ⅱ表示的吲哚并螺杂苯并吡喃衍生物溶解在极性有机溶剂（如甲醇）中，然后用紫外光，如硫酸镁等照射得到的。通过使用超高压汞灯。
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