ChemicalBook CAS DataBase List DIPHENYLMETHANE-4,4'-DICARBOXYLIC ACID

DIPHENYLMETHANE-4,4'-DICARBOXYLIC ACID synthesis

6synthesis methods

Product Name:DIPHENYLMETHANE-4,4'-DICARBOXYLIC ACID
CAS Number:790-83-0
Molecular formula:C15H12O4
Molecular Weight:256.25

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Yield:790-83-0 83%

Reaction Conditions:

with sodium chlorite;disodium hydrogenphosphate;2-methyl-but-2-ene in water;tert-butyl alcohol for 5 h;

Steps:

After dissolving 44.8 g (0.2 mol) of 4,4'-diformyldiphenylmethane synthesized by the JP 2005 - 154379A with the synthesizing method of the description to 200 ml of t-butanol, and 50 ml of water, In addition, 50 ml of dibasic-sodium-phosphate aqueous solutions and 140g (2 mol) of 2-methyl-2-butenes obtained the reaction solution by adding the sodium chlorite 36g (0.4 mol) further. Next, the solid was deposited by acidifying a reaction solution for this reaction solution after 5-hour churning using the 1-N solution of hydrochloric acid. Then, the solid which deposited the reaction solution in which the solid deposited after suction filtration using water was washed. By vacuum drying the obtained solid (compound), 39.8 g (83% of yield) of 4,4'-dicarboxydiphenylmethane was obtained.

References:

TOKUYAMA DENTAL CORPORATION;AKIZUMI, HIRONOBU;SAKATA, EIBU JP2017/149650, 2017, A Location in patent:Paragraph 0208

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