Phenol → alpha,alpha'-Dimethyl-alpha,alpha,alpha',alpha'-tetrakis(4-hydroxyphenyl)-p-xylene

HRID 325057

Reaction equation

HRID 325057 reaction equation
[C:1]([C:4]1[CH:9]=[CH:8][C:7]([C:10](=O)[CH3:11])=[CH:6][CH:5]=1)(=O)[CH3:2].[C:13]1([OH:19])[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1>>[CH3:2][C:1]([C:16]1[CH:17]=[CH:18][C:13]([OH:19])=[CH:14][CH:15]=1)([C:16]1[CH:17]=[CH:18][C:13]([OH:19])=[CH:14][CH:15]=1)[C:4]1[CH:9]=[CH:8][C:7]([C:10]([CH3:11])([C:16]2[CH:17]=[CH:18][C:13]([OH:19])=[CH:14][CH:15]=2)[C:16]2[CH:17]=[CH:18][C:13]([OH:19])=[CH:14][CH:15]=2)=[CH:6][CH:5]=1

Participants

3

Reactant 2

HCID 996PhenolHCID 138881,4-Diacetylbenzene

Product 1

HCID 22352143alpha,alpha'-Dimethyl-alpha,alpha,alpha',alpha'-tetrakis(4-hydroxyphenyl)-p-xylene

Procedure

0.0215 mols of α,α′-dimethyl-α,α,α′,α′-tetrakis(4-hydroxyphenyl)-p-xylene (produced from 1,4-diacetylbenzene and phenol and having a melting point of 307° C.), 9.2 mols of bisphenol A, 9.4 liters of an aqueous solution of 2.0 N sodium hydroxide, and 8 liters of dichloromethane were put into a 50 liters container equipped with a stirrer, and stirred therein, to which phosgene was introduced for 30 minutes. Next, 0.44 mols of bisphenol A, 0.022mols of triethylamine, and 4.5 liters of an aqueous solution of 0.2 N sodium hydroxide were added thereto, and reacted for 40 minutes, and thereafter the aqueous phase and the organic phase in the reaction mixture were separated from each other. Thus was prepared a dichloromethane solution of an oligocarbonate.

Sources & evidence

ORD record
ord-af0f685bc8e84499939123ce07ee12b0
Source dataset
uspto-grants-2001_04
Patent number
US06222004B1

Linked notes

Loading…