Process for synthesizing1,3,5-triphenyl benzene

A triphenylbenzene, a new synthesis technology, applied in 1 field, can solve the problems of waste of energy and high-purity nitrogen, long reaction time, reduced yield and the like, and achieve the effects of easy recovery, easy operation, and reduced production costs

A triphenylbenzene, a new synthesis technology, applied in 1 field, can solve the problems of waste of energy and high-purity nitrogen, long reaction time, reduced yield and the like, and achieve the effects of easy recovery, easy operation, and reduced production costs

CN1837168AInactive Publication Date: 2006-09-27YANGZHOU UNIV
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  • Process for synthesizing1,3,5-triphenyl benzene

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Embodiment Construction

[0018] Reaction formula of the present invention is:

[0019]

[0020] where R=(a)C 6 h 5 ; (b) 4-MeC 6 h 4 ; (c) 4-MeOC 6 h 4 ; (d) 4-ClC 6 h 4 ; (e) 4-BrC 6 h 4 ; (f)-Me; (g)4-NO 2 C 6 h 4

[0021] Specific steps:

[0022] Dissolve 1.2g of acetophenone in 10ml of dry anhydrous n-amyl alcohol, to prevent the water from destroying the tin tetrachloride added later and make the catalyst lose its effect, slowly drop in 5% mol of the catalyst tin tetrachloride under stirring, and then Add 5% mol of catalyst p-toluenesulfonic acid to form a composite catalyst. The amount is enough to ensure the normal progress of the reaction. React for 5 hours at a temperature of 110°C. After the reaction is completed, pour the reactant into 20ml of absolute ethanol , because the solubility of the product triphenylbenzene compound in ethanol is relatively small, so the product will be separated out in a large amount, then the ethanol solution is put into the refrigerator and cool...

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Abstract

The invention discloses a 1, 3, 5-triphenyl benzene synthesizing method, which comprises the following steps: dissolving acetophenone in n-amyl alcohol; mixing and adding in accelerant tin tetrachloride; putting in accelerant p-toluenesulfonic acid; reacting at 110deg.c for hours; pouring out reactant in absolute ethyl alcohol; mixing; filtering; using carrene-alcohol for recrystallization; getting 1,3,5-diphenylbenzene benzene. The invention solves the problem of the carbonization of corrosive acid catalystsing and synthesizing 1, 3, 5-triphenyl benzene, which reduces the reaction yield and environmental contamination.

Description

technical field [0001] The present invention relates to 1,3,5-triphenylbenzene, in particular to a synthesis method of 1,3,5-triphenylbenzene. Background technique [0002] 1,3,5-Triphenylbenzene is a class of aromatic compounds with a special structure. It is an important basic functional module for the construction of dendrimers, organic conductive polymers and polarized nonlinear optical materials. It is also a class of promising electroluminescent organic molecular materials. [0003] Prior to the present invention, the synthesis method of 1,3,5-triphenylbenzene included the use of rare earth chlorides, strong acids, silicon tetrachloride and aluminum trichloride to catalyze the synthesis of acetophenone trimolecular condensation. However, most of these reactions have defects such as cumbersome operation, harsh reaction conditions, or long reaction time. The specific performance is as follows: [0004] The strong acid used in the common strong acid catalyzed synthesis...

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Application Information

Patent Timeline
27 Sep 2006
Publication
CN1837168A
IPC
C07C2/42; C07C15/14
Inventors
景崤壁; 徐峰