ChemicalBook CAS DataBase List 3,3'-Diaminobenzophenone

3,3'-Diaminobenzophenone synthesis

7synthesis methods

Product Name:3,3'-Diaminobenzophenone
CAS Number:611-79-0
Molecular formula:C13H12N2O
Molecular Weight:212.25

119-61-9 Synthesis

119-61-9
767 suppliers
$5.00/10g

611-79-0
154 suppliers
$45.00/50mg

Yield: 83%

Reaction Conditions:

Stage #1:benzophenone with dinitrogen pentoxide in dichloromethane at 30; for 5 h;Molecular sieve;
Stage #2: with hydrogen;nickel in dichloromethane under 11251.1 Torr; for 5 h;Temperature;Pressure;

Steps:

1; 2; 3 Example 2
At 30 ° C, benzophenone 91 g (0.5 mol) was added to a 2 L titanium alloy pressure reactor.Add 50g of HZSM-4 catalyst, solvent dichloromethane 200mL,After stirring and dissolving,Add 550ml,2mol/L of dinitrogen peroxide in methylene chloride solution,The reaction was stirred for 5 h.After the completion of the reaction, 2 g of nickel powder was added, and hydrogen gas was introduced to bring the pressure in the reactor to 1.5 MPa, and the mixture was stirred and reacted for 5 hours.After the completion of the reaction, the reaction mixture was filtered, and the filtrate was evaporated to dryness to give crude 3,3'-diaminobenzophenone. The crude product was recrystallized from a solution of ethanol:water = 1:2 to give white powdery crystals, which, after drying, yielded 88.9 g of 3,3'-diaminobenzophenone.In the present Example 3, the yield of 3'-diaminobenzophenone was 83%, and the purity was 99.2%

References:

Hongwei High-tech Materials Co., Ltd.;Chengdu Zhengwei New Materials Research And Development Co., Ltd.;Huang Yuhong;Bu Gonggaofamingren CN109400481, 2019, A Location in patent:Paragraph 0035-0044; 0050-0055; 0056-0061

21222-05-9 Synthesis