7478-69-5

Basic information

• Product Name: 4,4'-VINYLIDENEBIS(N,N-DIMETHYLANILINE)
• Synonyms: 4,4'-VINYLIDENEBIS(N,N-DIMETHYLANILINE);4,4’-ethenylidenebis[n,n-dimethyl-benzenamin;4,4'-VINYLIDENEBIS(N,N-DIMETHYLANILINE), TECH., 90%;Bis(p-dimethylaminophenyl)-1,1 ethylene;1,1-Bis[4-(dimethylamino)phenyl]ethene;4,4'-(1,1-Ethenediyl)bis(N,N-dimethylaniline);4,4'-(Ethene-1,1-diyl)bis(N,N-dimethylaniline);4,4'-Ethenylidenebis(N,N-dimethylbenzenamine)
• CAS NO: 7478-69-5
• Molecular Formula: C₁₈H₂₂N₂
• Molecular Weight: 266.38
• EINECS: 231-284-6
• Mol File: 7478-69-5.mol
• Article Data: 10

Chemical Properties

• Melting Point: 119-121 °C(lit.)
• Appearance: /
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 4,4'-VINYLIDENEBIS(N,N-DIMETHYLANILINE)(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-VINYLIDENEBIS(N,N-DIMETHYLANILINE)(7478-69-5)
• EPA Substance Registry System: 4,4'-VINYLIDENEBIS(N,N-DIMETHYLANILINE)(7478-69-5)

Safety Data

• Hazard Codes: T
• Statements: 45-46-20/21/22-36/37/38
• Safety Statements: 53-23-26-36/37/39-45
• WGK Germany: 3
• Hazardous Substances Data: 7478-69-5(Hazardous Substances Data)

Usage

General Description

4,4'-Vinylidenebis(N,N-dimethylaniline) is a chemical compound with the molecular formula C18H22N2. It is a dark purple solid that is used in the production of various polymers and as a reactive dye intermediate. 4,4'-VINYLIDENEBIS(N,N-DIMETHYLANILINE) is considered to be a potential human carcinogen and has been shown to cause skin and eye irritation upon contact. It has also been linked to adverse effects on the respiratory system and can be harmful if inhaled or ingested. Due to its potential health risks, proper safety measures should be followed when handling and working with 4,4'-Vinylidenebis(N,N-dimethylaniline).

Upstream product

• 27200-84-6 methyl triphenylphosphonium bromide 
• 90-94-8 bis(p-dimethylaminophenyl)methanone 
• 74-88-4 methyl iodide 
• 1779-49-3 Methyltriphenylphosphonium bromide 
• 78-08-0 Triethoxyvinylsilane 
• 586-77-6 4-bromo-N,N-dimethylaniline 
• 141-78-6 ethyl acetate 
• 33905-89-4 1,1-bis<4-(dimethylamino)phenyl>-1-ethanol 
• 75-16-1 methylmagnesium bromide 
• 917-64-6 methyl magnesium iodide 
• 1309-60-0 lead(IV) oxide 

Downstream Products

• 571-60-8 1,4-Dihydroxynaphthalene 
• 122767-54-8 [2,2-bis-(4-dimethylamino-phenyl)-vinyl]-(2,4-dinitro-phenyl)-selenide 
• 123055-55-0 [2,2-bis-(4-dimethylamino-phenyl)-vinyl]-(2-nitro-phenyl)-selenide 
• 124129-17-5 1-[2,2,-bis-(4-dimethylamino-phenyl)-vinylselanyl]-anthraquinone 
• 20094-58-0 1,1,4,4-Tetrakis(4-dimethylaminophenyl)-1,3-butadiene 
• 3600-55-3 1,1-bis-(4-dimethylamino-phenyl)-ethane 
• 87892-64-6 1,1-bis<4-(dimethylamino)phenyl>-2-nitroethylene 
• 17665-72-4 3,3-bis(4-dimethylaminophenyl)propenal 
• 103480-06-4 4-[3,3-bis-(4-dimethylamino-phenyl)-allylidene]-2-phenyl-4H-oxazol-5-one 
• 119191-30-9 1,1,5,5-tetra-(p-dimethylaminophenyl)-2,4-pentadiene-1-ol perchlorate 

Relevant articles and documents

Direct Allylic C(sp3)?H and Vinylic C(sp2)?H Thiolation with Hydrogen Evolution by Quantum Dots and Visible Light

Direct allylic C?H thiolation is straightforward for allylic C(sp3)?S bond formation. However, strong interactions between thiol and transition metal catalysts lead to deactivation of the catalytic cycle or oxidation of sulfur atom under oxidative condition. Thus, direct allylic C(sp3)?H thiolation has proved difficult. Represented herein is an exceptional for direct, efficient, atom- and step-economic thiolation of allylic C(sp3)?H and thiol S?H under visible light irradiation. Radical trapping experiments and electron paramagnetic resonance (EPR) spectroscopy identified the allylic radical and thiyl radical generated on the surface of photocatalyst quantum dots (QDs). The C?S bond formation does not require external oxidants and radical initiators, and hydrogen (H2) is produced as byproduct. When vinylic C(sp2)?H was used instead of allylic C(sp3)?H bond, the radical-radical cross-coupling of C(sp2)?H and S?H was achieved with liberation of H2. Such a unique transformation opens up a door toward direct C?H and S?H coupling for valuable organosulfur chemistry.

Reversibly thermochromic systems based on pH-sensitive spirolactone-derived functional dyes

Composites formulated from pH-sensitive colour formers mixed with fatty acid co-solvents and acidic developers have been prepared and their thermochromic properties investigated. Possible explanations for the thermochromic effect have been considered and evidence is presented in support of a mechanism based on phase changes occurring within the compositions during heating and cooling. British Crown Copyright 1998/MOD. Published with the permission of the Controller of Her Britannic Majesty's Stationery Office.