1,1-Diphenylethylene is an aromatic hydrocarbon with
chemical formula
In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, ...
CH.
Properties
1,1-Diphenylethylene mediates the radical polymerization of
methyl acrylate
Methyl acrylate is an organic compound, more accurately the methyl ester of acrylic acid. It is a colourless liquid with a characteristic acrid odor. It is mainly produced to make acrylate fiber, which is used to weave synthetic carpets. It is al ...
or
styrene
Styrene () is an organic compound with the chemical formula C6H5CH=CH2. This derivative of benzene is a colorless oily liquid, although aged samples can appear yellowish. The compound evaporates easily and has a sweet smell, although high concen ...
. Meditation by 1,1-Diphenylethylene generates low molecular weight polymer by a termination reaction.
Dibenzofulvene is an analogue of a 1,1-Diphenylethylene.
Synthesis
1,1-Diphenylethylene is technical prepared by alkylating
benzene
Benzene is an organic chemical compound with the molecular formula C6H6. The benzene molecule is composed of six carbon atoms joined in a planar ring with one hydrogen atom attached to each. Because it contains only carbon and hydrogen atoms ...
by
styrene
Styrene () is an organic compound with the chemical formula C6H5CH=CH2. This derivative of benzene is a colorless oily liquid, although aged samples can appear yellowish. The compound evaporates easily and has a sweet smell, although high concen ...
in presence of a
zeolite
Zeolites are microporous, crystalline aluminosilicate materials commonly used as commercial adsorbents and catalysts. They mainly consist of silicon, aluminium, oxygen, and have the general formula ･y where is either a metal ion or H+. These p ...
beta and subsequent
dehydrogenation
In chemistry, dehydrogenation is a chemical reaction that involves the removal of hydrogen, usually from an organic molecule. It is the reverse of hydrogenation. Dehydrogenation is important, both as a useful reaction and a serious problem. A ...
.
[EP0742190 A1, BASF , 13 Nov 1996, Process for the Preparation of Diarylethanes]
: styrene + benzene → 1,1-diphenylethane → 1,1-diphenylethylene + H
See also
*
Dibenzofulvene
*
Stilbene Stilbene may refer to one of the two stereoisomers of 1,2-diphenylethene:
* (''E'')-Stilbene (''trans'' isomer)
* (''Z'')-Stilbene (''cis'' isomer)
See also
* Stilbenoid
Stilbenoids are hydroxylated derivatives of stilbene. They have a C6– ...
References
{{DEFAULTSORT:Diphenylethylene, 1, 1-
Phenyl compounds
Vinylidene compounds