N,N'-bis(2-methylphenyl)benzene-1,4-diamine synthesis
- Product Name:N,N'-bis(2-methylphenyl)benzene-1,4-diamine
- CAS Number:15017-02-4
- Molecular formula:C20H20N2
- Molecular Weight:288.3862
Yield:15017-02-4 120 g
Reaction Conditions:
with 5%-palladium/activated carbon in water;N,N-dimethyl-formamide;benzene at 120; for 4 h;
Steps:
5 Example 5
To a four-necked flask equipped with a thermometer, a trap, and a condenser, 69 g (0.5 mol) of p-nitroaniline,123.2g (1.1mol) o-methylcyclohexanone, 17g catalyst Pd / C (content 5%, water content 60%),120mL of dimethylformamide and 20mL of benzene, heated to 120 ° C and refluxed, and continuously removed the water separated by the condensate;After 4 hours of holding temperature reaction, the condensate will not be water-separated, cool down, and filter the catalyst;The filtrate was distilled under reduced pressure, and benzene, dimethylformamide and a small excess of raw materials were distilled off.Get residue 120g,The sampling GC area normalization method determined that the content of bis (o-methylphenyl) -p-phenylenediamine was 96%.
References:
CN110734380,2020,A Location in patent:Paragraph 0077-0078
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