Neopentyl glycol → 4,4'-[2,2-Dimethyl-1,3-propanediylbis(oxycarbonyl)]bis(2,6-dichlorophenol)

Participants

Reaction Conditions

Reaction Steps

A mechanically stirred mixture of 0.6 g of calcium acetate, 0.6 g of antimony oxide, 15.7 g (0.15 M) of 2,2-dimethyl-1,3-propanediol, and 132 g (0.6 mole) of methyl 3,5-dichloro-4-hydroxybenzoate was heated under a nitrogen atmosphere at 200° C for 18 hours. The reaction mixture was washed three times with benzene in a Waring Blendor and extracted for five days with 2 liters of hot benzene. The extract, on cooling, yielded 50.5 g of 4,4'-[2,2-dimethyl-1,3-propanediylbis(oxycarbonyl)]bis-(2,6-dichlorophenol) melting at 180°-181° C. The infrared spectrum was consistent with the indicated structure. The compound contained 4.115 meq. of OH/g, indicating a molecular weight of 486 for the bisphenol.

Provenance & Evidence