Bis[4-(4-aminophenoxy)phenyl]sulfone synthesis
- Product Name:Bis[4-(4-aminophenoxy)phenyl]sulfone
- CAS Number:13080-89-2
- Molecular formula:C24H20N2O4S
- Molecular Weight:432.49
80-07-9
328 suppliers
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13080-89-2
134 suppliers
$70.00/10 g
Yield:-
Reaction Conditions:
in 1-methyl-pyrrolidin-2-one;water
Steps:
1 EXAMPLE 1
At this temperature, a solution of 140.9 g (0.49 mol) of 4,4'-dichlorodiphenyl sulfone in 100 ml of N-methylpyrrolidone is added. The internal temperature is then continuously increased to 170° C. In the meantime, the toluene used is distilled off at an internal temperature of about 110° C. The temperature is maintained at 170° C. for 5 hours and then lowered to 70° C. At this temperature, 1.5 l of a water/methanol mixture (1:1) is slowly added, as a result of which the 4,4'-bis(4-aminophenoxy)diphenyl sulfone formed precipitates. The mixture is cooled to room temperature. The precipitated product is filtered off, washed with water and dried.
References:
Huels Aktiengesellschaft US5118848, 1992, A
80-07-9
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13080-89-2
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13080-89-2
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13080-89-2
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13080-89-2
134 suppliers
$70.00/10 g