114747-48-7Relevant articles and documents
Microwave-Assisted Solvent-Free Synthesis of the Substituted Spiroindolinonaphth[2,1-b][1,4]oxazines
Koshkin,Fedorova,Lokshin,Guglielmetti,Hamelin,Texier-Boullet,Gromov
, p. 315 - 322 (2004)
The synthesis of the substituted spiroindolinonaphth[2,1-b][1,4]oxazines 3a-e is developed through the condensation of 2-methylene-1,3,3-trimethylindoline derivatives and 1-nitroso-2-naphthol under microwave irradiation. In the same conditions, in presence of morpholine the 6′-morpholinosubstituted compounds 4a, b, d, e are formed. The main advantages of the method are the short reaction time, solvent-free reaction condition, cleaner reaction products and the higher product yields in comparison with known methods of synthesis.
Synthesis, characterization and photochromic studies in film of heterocycle-containing spirooxazines
Tan, Ting-Feng,Chen, Pei-Li,Huang, Hua-Ming,Meng, Ji-Ben
, p. 8192 - 8198 (2007/10/03)
A series of novel heterocycle-containing spirooxazines have been designed and synthesized, and their photochromic properties were investigated under flash photolysis and continuous irradiation in particular regard to the fatigue resistance, the lifetime of the colored merocyanine form in various solutions and polymers. Especially, the characteristics of two UV-sensitive spirooxazines dispersed polymethylmethacrylate thin-films were extensively studied. Detailed studies showed that general significant shifts in the λmax of the absorption spectra of the open forms, interesting fatigue resistances and emission fluorescene properties were observed.
Protolysis of spironaphtho(aza)pyranoindoles
Gabbutt, Christopher D.,Hepworth, John D.,Heron, B. Mark,Partington, Steven M.
, p. 647/323 - 652/328 (2007/10/03)
Some novel amino-substituted spiroindolinonaphthopyrans have been synthesised. Whilst these compounds exhibit no observable photochromic properties at ambient temperature, protonation results in ring opening to given stable, intensely coloured dyes. Recyclisation and decolouration result on basification.