73718-62-4

Usage

Uses

Used in Textile Industry:
1-Ethyl-2-methylene-3,3-dimethylindoline is used as a colorant and dye intermediate for its ability to produce stable, lightfast, and chemical-resistant dyes and pigments. It is particularly instrumental in the creation of dyes for textiles, ensuring colorfastness and durability in finished products.
Used in Plastics Industry:
In the plastics industry, 1-Ethyl-2-methylene-3,3-dimethylindoline serves as a dye intermediate, contributing to the development of pigments that maintain their color integrity under various conditions, thus enhancing the aesthetic and functional properties of plastic materials.
Used in Paints Industry:
1-Ethyl-2-methylene-3,3-dimethylindoline is utilized as a dye intermediate in the production of paints, providing a stable color base that resists fading and chemical degradation, which is essential for both indoor and outdoor applications.
Safety and Storage:
Due to its potential to cause skin and eye irritation as well as allergic reactions in some individuals, it is crucial to handle 1-Ethyl-2-methylene-3,3-dimethylindoline with proper protective measures. Additionally, to prevent combustion and maintain its stability, EMDI should be stored in a cool, dry place, away from heat, flames, and sparks.

Upstream product

• 14134-81-7 1-ethyl-2,3,3-trimethylindolium iodide 
• 1640-39-7 2,3,3-trimethylindoleniune 
• 74-96-4 ethyl bromide 
• 100-63-0 phenylhydrazine 
• 563-80-4 3-methyl-butan-2-one 

Downstream Products

• 3879-67-2 1-ethyl-3,3,6'-trimethyl-1,3-dihydro-spiro[indole-2,2'-pyrano[3,2-h]quinoline] 
• 3879-66-1 1-ethyl-3,3-dimethyl-1,3-dihydro-spiro[indole-2,2'-pyrano[3,2-h]quinoline] 
• 122275-78-9 3,3-dimethyl-5'-oxo-1-ethyl-1,3-dihydrospiro<2H-indole-2,2'-pyrrolidine> 
• 14134-81-7 1-ethyl-2,3,3-trimethylindolium iodide 
• 84716-03-0 C₂₆H₂₄N₂O₃ 
• 84716-07-4 C₂₆H₂₄N₂O₃ 
• 84716-09-6 C₂₆H₂₃BrN₂O₃ 
• 84716-08-5 C₂₇H₂₆N₂O₄ 
• 84716-05-2 C₂₆H₂₃BrN₂O₃ 
• 84716-04-1 C₂₇H₂₆N₂O₄ 
• 84716-06-3 C₂₆H₂₃N₃O₅ 
• 120420-74-8 3,3-dimethyl-6'-oxo-1-ethyl-1,3-dihydrospiro<2H-indolo-2,2'-piperidine> 
• 1047661-12-0 C₂₄H₂₀N₄ 
• 1239703-01-5 C₁₅H₁₈ClNO 

Relevant academic research and scientific papers

Synthesis and application of spiropyrane derivative probe for naked eye detection of chrome III

The invention belongs to the technical fields of the preparation and application of biological probe materials and provides synthesis and application of a spiropyrane derivative probe for naked eye detection of chrome III. The spiropyrane derivative probe can be used for detecting chrome ions in a water solution and is prepared by linking benzimidazole as a chrome ion recognition group and hemicyanine as a fluorescent group through amino groups; and the chrome ions are recognized by the steps of inducing breakage of spiropyrane C-O through complexing and coordination with benzimidazole, and carrying out ring-opening fluorescence emission. The structural formula of the probe is as follows: formula (shown in the description), SP for short. The probe can be used for selectively detecting thechrome ions; and ultraviolet spectrograms of solutions acting with different metal ions show that the changes of the ultraviolet spectrograms are most obvious only after the probe is bound with the chromium ions, and the color of the solution of the chromium ions and the probe is changed from colorless to obviously red.

Novel spiropyran-bipyridine derivative and application thereof to naked-eye detection for copper (II)

The invention belongs to the technical fields of preparation and application of biological probe materials, aims at solving the problems of very high environmental requirement and relative complexityin operation due to poor water solubility of a current spiropyran derivative and light sensitivity of spiropyran and provides a novel spiropyran-bipyridine derivative and an application thereof to thenaked-eye detection for copper (II). The derivative is formed by additionally adding two pyridine groups on the basis of a spiropyrane structure, and a structural formula of a probe is as shown in the specification; before and after a copper ion is added into a probe molecule, the color of a solution is converted from colorlessness to pink within 60 s, the response speed is high, and no changes happen when other positive ions are added, so that the selective detection for the copper ion can be realized under the disturbance of coexisting ions of other ions. The high-polarity structure greatlyimproves the solubility of the probe in a water system. The response is rapid and obvious. After being complexed with Cu, the probe molecule can generate absorption in a visible region, so that the naked-eye detection is realized.

Water-soluble indoline spironaphthoxazine quaternary ammonium salt additive, preparation method and application thereof

The invention discloses a water-soluble indoline spironaphthoxazine quaternary ammonium salt additive, a preparation method and application thereof. The method is characterized by comprising the following steps: taking 1-ethyl-3,3-dimethyl-2-methylene indoline and 1-nitroso-2,7-naphthalenediol as raw materials, preparing a 9'-bit spironaphthoxazine compound with a phenolic hydroxyl group; reacting the spironaphthoxazine compound with dibromobutane under an alkaline condition, thereby acquiring 9'-bit midbody with Br active point; and reacting the 9'-bit midbody with Br active point with triethylamine, re-crystallizing and purifying, thereby acquiring the water-soluble indoline spironaphthoxazine quaternary ammonium salt additive. The water-soluble indoline spironaphthoxazine quaternary ammonium salt additive has the characteristics of excellent water solubility, thermal stability and fatigue resistance and can be applied to the field of aqueous polyurethane coating, polyacrylic acid coating or polyvinyl alcohol sizing agent.

A photosensitive color-changing material and its color-changing in the dress material application (by machine translation)

The present invention provides a novel structure containing Schiff base unit of spiral wicked qinqin kind of type I compounds, the compound is a photosensitive color-changing material of a small organic molecule. The invention also provides a synthetic method of containing the Schiff base unit piperazine compounds. The compounds of this invention can be used as a dye, to aldehyde fabric, is aldehyde fabric can be in the nature change color under the sunlight. (Type I). (by machine translation)

Colorimetric Cyanide Chemosensor Based on 1′,3,3′,4-Tetrahydrospiro[chromene-2,2′-indole]

A new class of chemosensors based on the 1′,3,3′,4-tetrahydrospiro[chromene-2,2′-indole] ring system, which detects cyanide with high specificity, is described. These chemosensors show a distinct color change when treated with cyanide in acetonitrile solution buffered with sodium phosphate, and this procedure is not affected by the presence of other common anions. The chemisensors exhibit high sensitivity to low concentrations of cyanide, meeting the European Union water quality control criterion of sensitivity below 0.05 mg L-1, and show a very fast response within tens of seconds. The mechanism for detection is rationalized by the nucleophilic substitution of the phenolic oxygen atom at the indoline C-2 atom by the cyanide anion to form a stable indolylnitrile adduct and to generate the colored 4-nitrophenolate chromophore. These chemosensors can be synthesized by a simple procedure from commercially available starting materials.

Synthesis of 1′,3,3′,4-tetrahydrospiro[chromene-2,2′- indoles] as a new class of ultrafast light-driven molecular switch

A new class of ultrafast light-driven molecular switch has been designed and synthesized. The reaction of 1-substituted 2-methylidene-3,3-dimethyl-2,3- dihydro-1H-indoles with 2-chloromethyl-4-nitrophenol afforded 1′,3,3′,4-tetrahydrospiro[chromene-2,2′-indoles], following a basic workup. The spectroscopic properties and nanosecond-resolved photoinduced dynamics of five compounds in the 1′,3,3′,4- tetrahydrospiro[chromene-2,2′-indole] family were investigated.

Pentamethine Cyanine Fluorescent Dye with N-substituting at Beta-Position of Conjugated Chain

A pentamethine cyanine fluorescent dye with N-substituting at β-position of conjugated chain is disclosed. The dye reacts with biosubstrate including protein, liposome and DNA, and shows excellent selectivity. It has good living cell membrane permeability and shows good selectivity in living cell staining In addition, the dye has good stability and low background fluorescence, and can be used together with other fluorescent dyes having consistent wavelengths for single-channel excitation and multi-channel detection. The dye can be used in the fields of protein labeling and detecting, fluorescence immunoassay and living cell selective imaging and the like.

Structural properties and degree of intramolecular charge transfer of an N-Alkyl indoline-tricyanoquinodimethane system

A series of intramolecular charge-transfer compounds comprised of 1-alkyl-3,3-dimethyl-2-methyleneindoline (In, donor, n = alkyl chain length; 1-8, 10, 14, 16, 18, 20, and 22) and 7,8,8-tricyanoquinodimethane (=2-(4′-cyanomethylene-2′,5′-cyclohexadienylidene) malononitrile (3CNQ), acceptor) moieties linked through a π-bond, I n-3CNQ were prepared, and their structures are discussed. The melting points of the In-3CNQ solids decreased with increasing alkyl chain length until reaching a minimum point (95°C) at n = 18, and then began to gradually increase, indicating self-aggregation of the alkyl chains. The I n-3CNQ derivatives with long alkyl chains (n ≥ 6) produced supercooled liquids displaying conspicuous color changes after melting. Diverse molecular packing patterns were observed in the crystal structures. Most I n-3CNQ derivatives formed face-to-face and/or side-by-side dimeric motifs to cancel net dipole moments. I20-3CNQ formed a two-dimensional bilayer structure by π-stacking and self-assembly of the alkyl chains. Two types of molecular conformation, which significantly affect the electronic structures, were observed to be dependent on the alkyl chain length. A parameter to evaluate the degree of intramolecular charge transfer, namely bond length ratio, was proposed; it exhibited good agreement with solvatochromic shifts and molecular orbital calculations.