terephthaloyl chloride


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terephthaloyl chloride

[‚ter·əf′thal·ə‚wil ′klȯr‚īd]
(organic chemistry)
C6H4(COCl)2 Colorless needles with a melting point of 82-84°C; soluble in ether; used in the manufacture of dyes, synthetic fibers, resins, and pharmaceuticals.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Additionally, Isophthaloyl Chloride, Terephthaloyl Chloride, 2-ethyl hexanoyl Chloride, Isobutyryl Chloride and Pivaloyl Chloride are expected to maintain their dominance in the export market.
Ferrocene (m.p=172.5AdegC), hexadecyltrimethyl ammonium bromide (m.p=248-251AdegC), terephthaloyl chloride (m.p=81.5-83AdegC), triethyl amine (b.p=88.6-89.8AdegC) and n-hexane (b.p= 68.5-69.1AdegC) were purchased from Fluka, Switzerland.
4-Ferrocenyl phenol (0.5 g, 1.80 mmol), 10 mL THF, 10 mL triethylamine and terephthaloyl chloride (0.18 g, 0.9 mmol) were made to react to obtain E5.
A series of novel copolymers of poly(ether ketone ether ketone ketone) and poly(ether ketone ketone ether ketone ketone) containing 1,4-naphthylene moieties were prepared by the Friedel-Crafts acylation solution copolycondensation of terephthaloyl chloride (TPC) with a mixture of BPOBN and DPOBPN, over a wide range of BPOBN/DPOBPN molar ratios, in the presence of anhydrous Al[Cl.sub.3] and A-methylpyrrolidone (NMP) in 1,2-dichloroethane (DCE).
A series of novel copolymers of poly(ether ketone ether ketone ketone) and poly(ether ketone ketone ether ketone ketone) containing 1,4-naphthylene moieties were prepared by electrophilic Friedel-Crafts solution copolycondensation of terephthaloyl chloride (TPC) with a mixture of BPOBN and DPOBPN, over a wide range of BPOBN/DPOBPN molar ratios, as shown in Scheme 2.
Some new segmented poly(azomethine)esters (TPE-1, TPE-2, TPE-3, TPE-4, TPE-5, TPE-Ar, IPE-1, IPE-2, IPE-3, IPE-4, IPE-5, IPE-Ar) were synthesized by direct solution phase polycondensation of preformed monomer derivatives and organic diacid chlorides (terephthaloyl chloride (T) and isophthaloyl chlorides (I)) in THF under anhydrous/inert conditions.
Two new series of segmented poly(azomethine)esters were obtained by polycondensation reaction of preformed azomethine diols and diacid chloride, terephthaloyl chloride (T) and isophthaloyl chloride (I), using refluxing solvent, tetrahydrofuran (THF) and a base trimethylamine as a hydrochloric acid acceptor.
Terephthaloyl chloride (99%) (TPC), 6-hydroxy-2-napthoic acid (98%) (HNA).
1 eq.) of terephthaloyl chloride in 20 ml of DMAc solvent was added slowly in an ice bath.
N, N'-Bis(benzoyl) terephthalic acid dihydrazide(NA) was synthesized from benzoyl hydrazine and terephthaloyl chloride which was deprived from terephthalic acid via acylation, and the structures of the synthesized compound had been characterized by Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance techniques.
Terephthaloyl-bis-(4-oxyhenzoyichloride), 3, was synthesized by treating with excess thionyl chloride, at reflux temperature, of the corresponding dicarboxylic acid that resulted from the reaction of 4-hydroxybenzoic acid (2 mol) with terephthaloyl chloride (1 mol), according to a method presented in the literature (27); mp.: 223-226[degrees]C.
Branched aliphatic/aromatic oligomer 2 having four carboxylic acid end groups was prepared by the reaction of pentaerythritol and terephthaloyl chloride. In a reaction flask equipped with a reflux condenser terephthaloyl chloride (12.2 g, 0.06 mol) and pentaerythritol (2.04 g, 0.015 mol) were mixed with 100 ml THF, and then refluxed at 90 [degrees] C for [approximately]5 hr, producing a copolyester oligomer with acyl chloride end groups.