6'-对位取代苯乙烯基吲哚啉螺吡喃的合成

利用2-亚甲基吲哚啉和取代水杨醛缩合得到十三种新的烷基苯乙烯基吲哚啉螺苯并吡喃。在苯并吡喃部分含有硝基的螺吡喃显示出逆光致变色行为，其它的则为普通光致变色化合物。同时，结果表明，化合物异构体的稳定性不仅取决于化合物本身的结构，而且还取决于介质环境的影响。     

某些1-辛基-3,3-二甲基吲哚啉螺苯并吡喃的合成和光致变色性质

取代的吲哚啉螺苯并吡喃具有光致变色性质,在光信息显示和记录等现代技术领域已取得初步应用。以往的工作表明,这类化合物的光致变色性质与分子中的取代基有密切关系。氮上有长链烷基的吲哚啉螺苯并吡喃已有报道。     

6'-硝基吲(口朶)啉螺苯并吡喃的合成

近年来,我们给学习有机化学的学生安排了6′-硝基-1,3,3-三甲基吲哚啉-2-螺-2′-苯并吡喃(简称6′-硝基吲哚啉螺苯并吡喃)的合成实验,引起多数同学的兴趣。大家都知道这     

N-苄基吲(口乃木)啉螺苯并吡喃和螺萘并噁嗪的合成

光致变色物质在数字显示、伪装、装饰及辐射线防护等方面有应用潜力。近年来人们对有机光致变色化合物吲哚啉螺苯并吡喃、螺萘并(口恶)嗪和螺苯并噻喃给予更多的关注。对这些     

光致变色6’-醛基螺吲■啉苯并吡喃的合成

6’-或8’-醛基螺吲哚啉苯并吡喃具有光致变色性质,加上该醛基又可与氨基、活泼甲基化合物以及Wittig试剂反应形成更有用的含C=N或C=C的化合物,因此,研究其合成     

聚乙二醇支载的螺吡喃类光致变色化合物的合成及其逆光致变色性质

采用DCC缩合的方法,将吲哚啉螺苯并吡喃的衍生物和聚乙二醇相缩合,以聚乙二醇末端的羟基和吲哚啉螺苯并吡喃衍生物的羧基为反应活性基团,实现了带有羧基的螺吡喃类光致变色化合物支载到了聚乙二醇两端.通过引入亲水基团得到了水溶性较好的螺环类光致变色化合物.通过对产物的紫外-可见光谱的研究发现,产物具有良好的光致变色性质,在乙醇、丙酮和乙酸乙酯中皆具有良好的光致生色现象;产物可溶于水,在紫外光(波长365nm)照射时产生了光消色现象,具有明显的逆光致变色性质.该方法原料易得,反应条件容易控制,为光致变色新材料的研究和开发提供了新方法.     

含氮杂冠醚结构单元的吲哚啉螺苯并吡喃的合成和性质

含氮杂冠醚结构单元的吲哚啉螺苯并吡喃的合成和性质伍新燕吴成泰＊（武汉大学化学系武汉４３００７２）关键词氮杂冠醚，螺吡喃，合成，性质１９９７－０６－０５收稿，１９９７－１２－０８修回国家自然科学基金和国家教委博士点专项基金资助项目含冠醚结构单元的吲哚啉...     

冠醚螺吡喃化合物的合成和光致变色性质

合成了四个新的6位带不同取代基的含冠醚结构单元吲哚啉螺苯并吡喃化合物(5a-5d),研究了其光致变色性质和离子诱导光致变色作用及取代基的影响。结果表明冠醚能稳定螺吡喃开环形式,碱金属离子对冠醚螺吡喃的生色有诱导作用;6位为吸电子基团时,螺吡喃开环形式的稳定性增加,而6位为推电子基团时,螺吡喃开环形式的稳定性降低。另外,就稳定螺吡喃开环体的作用来说,吲哚啉环上的取代基效应和苯并吡喃环上的正好相反。     

取代基对螺吡喃感光剂性质的影响

吲哚啉螺苯并吡喃类化合物作为有机感光剂在光信息储存方面有很大的实用价值。本文用2,3,9,9a-四氢-9,9,9a-三甲基噁唑并[3,2a]吲哚(简称TTOI)与水杨醛及其衍生物在无水乙醇中合成了17个化合物。     

吲哚啉螺苯并吡喃硝基衍生物的合成

吲哚啉螺苯并吡喃类化合物受光或热的作用后,颜色能够可逆地改变。这类光致变色感光剂可作为非银盐感光材料,近年来国内在这方面也进行了研究。我们用七个取代水杨醛与     

Synthesis and photochromism of indolinospirochromenes with condensed fragments in the indoline part of the molecules

Indoline spirochromenes with condensed fragments in the indoline part of the molecules were synthesized. All of the compounds have photochromic properties. The introduction of a condensed fragment into the indoline part of the molecule leads to a bathochromic shift of both the long-wave and short-wave absorption bands of the photomerocyanine; the rate of the dark reaction does not change.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 104–109, January, 1988.     

Spectral Properties and Photochromic Characteristics of Spiropyran Dyes

IntroductionSince the last decade, a large number of workshave concentrated on the photochromic behavior of in-dolinospirobenzopyran dyes[1—4]. Interest in these com-pounds has been concerned with the reversibility of thetransformation between the colorl…     

Spiropyrans and spirooxazines. 2. Synthesis,structures, and photochromic properties of 6"-cyano-substituted spironaphthooxazines

A series of 6"-cyano-substituted spiro[indoline-2,3"-naphtho[2,1-b]oxazines] containing substituents with carbon chains of different lengths in the indoline fragment were synthesized. The structure of one of these spironaphthooxazines was established by X-ray diffraction analysis. The influence of substituents on the photochromic properties of the resulting compounds in solutions and polymeric films was studied.     

Photochromism of indoline spiropyrans of the coumarin series in polymeric matrices

The photochromic properties and aggregation processes of merocyanine forms of indoline spiropyrans of the coumarin series in the block and film poly(methyl methacrylate) (PMMA) were studied and compared by spectral and kinetic methods. Photochromism of the synthesized compounds depends on their structure. The efficient formation of J-aggregates was observed for indoline spiropyrans of the coumarin series based on 8-formyl-7-hydroxy-4-methylcoumarin and 3-formyl-4-hydroxycoumarin. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 870–875, May, 2007.     

Photo-and thermochromic spiranes. 24. Novel photochromic spiropyrans from 2,4-dihydroxyisophthalaldehyde

Novel series of photochromic indoline and benzoxazine spiropyrans containing ortho-placed formyl and hydroxyl groups in the benzene ring of the chromene part of the molecule have been prepared. X-ray analysis has shown that, depending on the structure of the heterocyclic component in the spiro cyclization reaction different, nonequivalent formyl groups of 2,4-dihydroxyisophthalaldehyde can participate. The synthesized compounds were used as original analogs of salicylaldehyde. The novel photochromic bispyropyrans prepared contain two different asymmetric spiro carbon atoms. __________ Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 919–929, June, 2006.     

Photochromic properties of indoline spiropyrans of the coumarin series

The photochromic properties and aggregation processes of merocyanine forms of indoline spiropyrans of the coumarin series in solutions were studied by spectral and kinetic methods. Photochromism of the compounds synthesized depends on their structure. The efficient formation of J-aggregates was found for indoline spiropyrans 1a,b under UV irradiation and merocyanines 3a,b, which is indicated by the appearance of absorption and fluorescence bands in the visible spectral region and the resonance character of fluorescence. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2350–2356, October, 2005.     

Thermal and photostability of 5′,7′-dialkoxy-5,6′-dinitro-1,3,3-trimethylspiro(lndolin-2,2′-[2H]chromenes)

Some photochromic indoline spiropyrans have been synthesized and their thermal and photostability examined in films and in solution. Introduction of the NO₂ group into the indoline moiety of the molecule stabilizes the spiropyran form in solution and in films, but blocking the NO₂ group in the pyran moiety by adjacent alkoxy groups enhances the light stability of the compounds.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1202–1205, September, 1987.     

Synthesis and physicochemical properties of some spirochromenes obtained on the basis of 4-azaindoline

The condensation of N-methyl(ethyl)-3,3-dimethyl-2-methylene-4-azaindoline with salicylic acid derivatives was used to synthesize thermo- and photochromic spirochromenes. The kinetics of the spontaneous decolorization of these compounds in ethanol and toluene were studied. The photosensitivity to UV rays of the 4-azaindoline spirochromes is greater by a factor of 1.5 than that of the indoline analogs.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1367–1369, October, 1982.     

Photochromic and thermochromic spiranes. 20.* Photochromic properties of solid-phase films of novel formyl-substituted spiropyrans of the indoline series

We have synthesized novel forrnyl-substituted spiropyrans of the indoline series. We have obtained solid phase amorphous films of the synthesized spiropyrans bv thermal vacuum deposition and established their capacity for photochrornic transformations. We have investigated the effect of the substituents on the spectral properties of the original and colored forms of the solid-phase spiropyran films. We have shown that the kinetic characteristics of the photochromic transformations of these compounds in solid-phase films depend considerably on the bulk of the substituents in the indoline and benzopyran moieties, and also their electron active properties in the latter. Along with reversible processes, in the solid-phase spiropyran films we have observed irreversible photoreactions leading to degradation of the photochromic system.Scientific-Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-na-Donu 344090. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 399–405, March, 1996. Original article submitted February 28, 1996.