Reacción #63167

Ecuación de reacción

dimethyl terephthalate

methyl terephthalate chloride

dimethyl terephthalate

triphenylphosphine oxide

phosgene

→

terephthalic acid dichloride

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.WAITAfter 6-7 hours

Procedimiento

A mixture of 150 g of dimethyl terephthalate and 7 g of triphenylphosphine oxide was gassed with phosgene as in Example 1. After 5 hours, the reaction mixture contained only 1.3% of dimethyl terephthalate and 1.3% of methyl terephthalate chloride. After 6-7 hours, the conversion was complete and terephthalic acid dichloride was obtained (>99% pure).

Fuente