70264-58-3

Basic information

• Product Name: Benzene, 1,1'-(1E)-1,2-ethenediylbis[4-ethyl-, (E)-
• CAS NO: 70264-58-3
• Molecular Formula: C18H20
• Molecular Weight: 236.357
• Mol File: 70264-58-3.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Benzene, 1,1'-(1E)-1,2-ethenediylbis[4-ethyl-, (E)-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzene, 1,1'-(1E)-1,2-ethenediylbis[4-ethyl-, (E)-(70264-58-3)
• EPA Substance Registry System: Benzene, 1,1'-(1E)-1,2-ethenediylbis[4-ethyl-, (E)-(70264-58-3)

Safety Data

• Hazardous Substances Data: 70264-58-3(Hazardous Substances Data)

Upstream product

• 72-56-0 perthane 
• 16331-45-6 p-ethylbenzoyl chloride 
• 81734-57-8 4,4'-diethyl-cis-stilbene 
• 4748-78-1 4-ethylbenzylaldehyde 
• 25309-64-2 4-ethyl-1-iodobenzene 
• 162440-30-4 4-ethyl-1-iodomethylbenzene 
• 768-59-2 4-ethylbenzyl alcohol 
• 79135-69-6 1-ethyl-4-[2-(4-ethylphenyl)-1-ethynyl]benzene 

Downstream Products

• 4748-78-1 4-ethylbenzylaldehyde 

Relevant articles and documents

Method for preparing trans-diphenylethylene compound

The invention relates to a preparation method of organic compounds and provides a method for preparing a trans-diphenylethylene compound. The method comprises adding a gem-dibromomethyl aromatic hydrocarbon compound, copper and polyamine into a reactor in the presence of a solvent, carrying out deoxidizing treatment, adding an oxygen-free water-free solvent into the reactor, carrying out a coupling reaction process to obtain C-C- double bonds, and carrying out separation and purification to obtain the trans-diphenylethylene compound. The method has mild synthesis conditions and has good reaction compatibility to different functional groups. The gem-dibromomethyl aromatic hydrocarbon compound as a raw material is easy to synthesize, may have different substituent groups and has a variable structure. The product obtained by coupling a raw material can be simply treated and has high purity. The asymmetric trans-diphenylethylene compound can be prepared from two different raw materials.

REDUCTIVE COUPLING OF BENZOIC ACID HALIDES AND ESTERS USING LOW-VALENT TITANIUM

The reductive coupling of (substituted) benzoic acid chlorides and esters is achieved using low-valent titanium, generated from TiCl3 and LiAlH4.Both acid chlorides and esters seem to follow the same two reaction pathways: one path via tolanes to stilbenes, the other via benzils to complex mixtures of products arising from reduction and further coupling reactions.Although the exact product balance depends upon the reaction conditions the major product is (substituted) cis-stilbene.

NEW SIMPLE METHOD FOR THE SYNTHESIS OF CIS-STILBENES

A new method involving catalytic acetylenic condensation as the key stage was developed for the synthesis of cis-stilbenes.Subsequent selective hydrogenation of the synthesized alkyltolanes over Pd-CaCO3 gave a series of alkyl-substituted stilbenes. 1,8-Dimethylphenanthrene was obtained from o-iodotoluene.