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ChemicalBook CAS DataBase List Bis(3-amino-4-hydroxyphenyl)methanone
22445-98-3

Bis(3-amino-4-hydroxyphenyl)methanone synthesis

4synthesis methods
-

Yield:22445-98-3 80.12%

Reaction Conditions:

with palladium 10% on activated carbon;hydrazine hydrate in water at 75; for 6 h;Inert atmosphere;Reagent/catalyst;Temperature;

Steps:

8 Preparation of 4,4'-dihydroxy-3,3'-diaminobenzophenone:

0.01 mol of 4,4'-dihydroxy-3,3'-dinitrobenzophenone in a concentration of 10 wt% Pd / C and 0.556 to 1.667 mol of distilled water were mixed at room temperature and then heated to 60 to 95 ° C, slowly dropping 0.04 ~ 0.11mol hydrazine hydrate, constant temperature reaction 4 ~ 8h, with acid to adjust the pH 1, filter to remove the catalyst, the filtrate by adding alkali precipitation of crystals, and then filter to 4,4'-dihydroxy-3 , 3'-diaminobenzophenone.

References:

CN104478744,2017,B Location in patent:Paragraph 0066; 0067