3,3'-Diamino-4,4'-dihydroxydiphenyl sulfone synthesis
- Product Name:3,3'-Diamino-4,4'-dihydroxydiphenyl sulfone
- CAS Number:7545-50-8
- Molecular formula:C12H12N2O4S
- Molecular Weight:280.3
56486-79-4
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Yield: 98%
Reaction Conditions:
with ammonium hydroxide in 1-methyl-pyrrolidin-2-one at 150;Solvent;Temperature;
Steps:
7 Preparation of 3,3'-diamino-4,4'-dihydroxydiphenyl sulfone
To the kettle was added 40. 8 g3,3'-dibromo-4,4'-dihydroxydiphenylsulfone, 250 ml of N-methylpyrrolidone and28 g ammonia solution (molar ratio: 3, 3 '- dibromo - 4, 4' - dihydroxydiphenyl sulfone: N - methyl pyrrolidone: ammonia water = 1: 26: 8) to 150 ° C, After completion of the reaction, 160 ml of the solvent was distilled off under reduced pressure, and the remaining reaction solution was poured into water, filtered, washed with water and dried to give 27.4 g of 3,3'-diamino-4,4'-dipyldibenzene, Yield 98%.
References:
Tianjin Junkai Chemical Technology Co., Ltd.;Li, Xiaodong;Shang, Zhenhua CN105218415, 2016, A Location in patent:Paragraph 0005; 0030; 0031; 0032
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