18869-29-9

Basic information

• Product Name: 4,4'-DIMETHYL-TRANS-STILBENE
• Synonyms: 4,4'-DIMETHYL-TRANS-STILBENE;dimethylstilbene;4,4''-DIMETHYL-TRANS-STILBENE 99+%;(E)-4,4'-Dimethylstilbene;(E)-1,2-Bis(4-methylphenyl)ethene;4,4'-DiMethyl-trans-stilbene;(E)-1,2-Di-p-tolylethene
• CAS NO: 18869-29-9
• Molecular Formula: C₁₆H₁₆
• Molecular Weight: 208.3
• Product Categories: Stilbenes
• Mol File: 18869-29-9.mol
• Article Data: 187

Chemical Properties

• Melting Point: 183 °C
• Boiling Point: 325.5°Cat760mmHg
• Flash Point: 157.8°C
• Appearance: /
• Density: 1.015g/cm³
• Vapor Pressure: 0.000435mmHg at 25°C
• Refractive Index: 1.633
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 4,4'-DIMETHYL-TRANS-STILBENE(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-DIMETHYL-TRANS-STILBENE(18869-29-9)
• EPA Substance Registry System: 4,4'-DIMETHYL-TRANS-STILBENE(18869-29-9)

Safety Data

• Hazardous Substances Data: 18869-29-9(Hazardous Substances Data)

Usage

Chemical Properties

Scaly pale yellow crystals

Synthesis Reference(s)

Tetrahedron Letters, 31, p. 1495, 1990 DOI: 10.1016/S0040-4039(00)88842-5

InChI:InChI=1/C16H16/c1-13-3-7-15(8-4-13)11-12-16-9-5-14(2)6-10-16/h3-12H,1-2H3/b12-11+

Upstream product

• 60-29-7 diethyl ether 
• 4413-31-4 Methylchlor 
• 925-90-6 ethylmagnesium bromide 
• 530-45-0 1,1-di(4-methylphenyl)ethane 
• 1633-22-3 [2.2]Paracyclophan 
• 51490-06-3 1,2-di-p-tolyl-ethanone 
• 59900-59-3 β.β.β-Trichlor-α.α-di-p-tolyl-aethan 
• 26504-12-1 dithiocarbonic acid S-benzyl ester-O-(4-methyl-benzyl ester) 
• 26512-92-5 dithiocarbonic acid O-(4-chloro-benzyl ester)-S-(4-methyl-benzyl ester) 
• 20193-94-6 bis-(4-methyl-benzyl)-disulfide 
• 74728-40-8 S,S-Bis<4-methylbenzyl> dithiocarbonate 
• 53164-47-9 bis(4-methylphenyl) fumarate 
• 104-87-0 4-methyl-benzaldehyde 
• 4702-76-5 4,4'-dimethylbenzaldazine 

Downstream Products

• 538-39-6 1,2-di-p-tolylethane 
• 60682-97-5 (1E)-1,2-bis[3-(bromomethyl)phenyl]diazene 
• 101730-36-3 (+/-)-acetic acid-(threo-4,4'-dimethyl-α'-nitro-bibenzyl-α-yl ester) 
• 1576-67-6 3,6-dimethylphenanthrene 
• 23843-15-4 4,4'-trans-(4-Isopropyl-styryl)-trans-stilben 
• 670-54-2 tetracyanoethylene anion 
• 38424-11-2 radical cation of 4,4'-dimethyl-trans-stilbene 
• 79606-70-5 (1R,2S,2aS,10bR)-1,2-Di-p-tolyl-1,10b-dihydro-2H-cyclobuta[l]phenanthrene-2a-carbonitrile 
• 79606-70-5 (1S,2R,2aS,10bR)-1,2-Di-p-tolyl-1,10b-dihydro-2H-cyclobuta[l]phenanthrene-2a-carbonitrile 
• 133966-29-7 3,6-Dimethyl-1,2,3,4-tetrahydrophenanthrene 
• 2510-76-1 (Z)-4,4'-dimethylstilbene 
• 104-87-0 4-methyl-benzaldehyde 
• 1588-49-4 trans-4,4'-dimethylstilbene radical cation 
• 62006-51-3 trans-2,3-bis(4-methylphenyl)oxirane 

Relevant articles and documents

Implications for multidimensional effects on isomerization dynamics: Photoisomerization study of 4,4'-dimethylstilbene in n-alkane solvents

Studies of the photoisomerization of 4,4'-dimethylstilbene in n-alkane solvents are reported.As with similar studies it is possible to identify an activation barrier to isomerization and the viscosity dependence of the isomerization is not adequately expl

Efficient preparation method of symmetric diarylethene compound

The invention belongs to the technical field of fine chemicals and related chemistry, and provides an efficient preparation method of a symmetric diarylethene compound. The method comprises the following steps: with halomethyl-containing aromatic hydrocarbon and derivatives thereof as raw materials, conducting reacting at 100 DEG C for 12 hours in the presence of a catalyst, alkali, additives andan anhydrous organic solvent so as to obtain the corresponding diarylethene compound with symmetry. The method has the beneficial effects that no transition metal reaction exists, reaction conditionsare mild, operation is simple and convenient, the possibility of industrialization is realized, and the diarylethene compound is obtained at high yield; and the diarylethene compound synthesized by using the method can be further functionalized to obtain various compounds, and is applied to development and research of natural products, functional materials and fine chemicals.

Energy-Transfer-Mediated Photocatalysis by a Bioinspired Organic Perylenephotosensitizer HiBRCP

Energy transfer plays a special role in photocatalysis by utilizing the potential energy of the excited state through indirect excitation, in which a photosensitizer determines the thermodynamic feasibility of the reaction. Bioinspired by the energy-transfer ability of natural product cercosporin, here we developed a green and highly efficient organic photosensitizer HiBRCP (hexaisobutyryl reduced cercosporin) through structural modification of cercosporin. After structural manipulation, its triplet energy was greatly improved, and then, it could markedly promote the efficient geometrical isomerization of alkenes from the E-isomer to the Z-isomer. Moreover, it was also effective for energy-transfer-mediated organometallic catalysis, which allowed realization of the cross-coupling of aryl bromides and carboxylic acids through efficient energy transfer from HiBRCP to nickel complexes. Thus, the study on the relationship between structural manipulation and their photophysical properties provided guidance for further modification of cercosporin, which could be applied to more meaningful and challenging energy-transfer reactions.