1,4-Bis-(4-chlorobenzoyl) benzene was synthesized with terephthaloyl chloride and chlorob- enzene (or bromobenzene),and aluminum chloride as catalyst.

1,4-Bis-(4′-bromobenzoyl)benzene was synthesized from terephthaloyl chloride and bromobenzene using aluminum chloride as a catalyst.

A series of novel chloro substituted poly(aryl ether ether ketone ketone/aryl ether ether ketone ketone)s with pendant cyno groups were prepared by low temperature copolycondensation of 2,5-dichloro-1,4benzendicarbonyl chloride(DDC),terephthaloyl chloride(TPC) with 2,6-diphenoxylbenzonitrile(DPOBN) in the presence of AlCl_(3),DCE and NMP.

Study on synthesis of terephthaloyl dichloride by triphase phase-transfer catalysis

A series of copolymers consisting of polyether ether ketone ketone(PCEEKK)with pendant cyano groups and polyether ketone ether ketone ketone(PEKEKK)were synthesized in the presence of AlCl3 and NMP by low temperature solution polycondensation of DPOBN and 4,4′-diphenoxybenzophenone(DPBP)with terephthaloyl dichloride in 1,2-dichloro-ethane.

An aromatic polycyano ether ether ketone ketone (PCEEKK) was synthesized by low temperature solution polycondensation of 2,6 - diphenoxybenzonitrile with terephthaloyl dichloride (TPC), isophthaloyl dichloride (IPC) in 1,2 - dichloroethane and in presence of AlC13 and NMP.

The purer DPT/DPI were synthesized by interfacial reaction of paraphthaloyl chloride(TPC)/isophthaloyl chloride(IPC) with phenol and sodium hydroxide in the presence of a phase transfer catalyst.

The starting reagent, tetrachloro-p-phthalodinitrile, was subjected to fluorination, hydrolysis, decarboxylation, acyl chlorination, and a five-step reduction reaction to synthesize 2,3,5,6-tetrafluorobenzyl alcohol, followed by condensation with 2,2-dimethyl-3-(2,2-dichloro vinyl cyclopropane carbonyl chloride) to yield transfluthrin.