Detail of "47230-38-6"

CAS Number:
47230-38-6
Name:
[1,1'-Biphenyl]-4,4'-dicarboxylicacid, 4,4'-diethyl ester
Molecular Structure:
Formula:
C18H18 O4
Molecular Weight:
298.3331
Synonyms:
4,4'-Biphenyldicarboxylicacid, diethyl ester (6CI,7CI); [1,1'-Biphenyl]-4,4'-dicarboxylic acid, diethylester (9CI); 4,4'-Bis(ethoxycarbonyl)-1,1'-biphenyl;4,4'-Bis(ethoxycarbonyl)biphenyl; Diethyl1,1'-biphenyl-4,4'-dicarboxylate; Diethyl 4,4'-biphenyldicarboxylate; Diethyl p,p'-bibenzoate; NSC 93978
Density:
1.132g/cm³
Boiling Point:
431.3°Cat760mmHg
Flash Point:
215°C

Display：

Diethyl 4,4'-Biphenyldicarboxylate

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Preparation of 4,4'-biphenyldicarboxylic acid diesters: Preparation of 4,4'-biphenyldicarboxylic acid diesters. Sugi, Yoshihiro; Takeuchi, Kazuhiko; Matsuzaki, Takehiko; Arakawa, Hironori; Hanaoka, Takamasa; Doi, Teisho; Takagi, Satoru (Agency of Industrial Sciences and Technology; Zaidan Hojin Sekiyu Sangyo Kasseika Center, Japan). Jpn. Kokai Tokkyo Koho JP 03258752 A2 19 Nov 1991 Heisei, 5 pp. (Japan). CODEN: JKXXAF. CLASS: ICM: C07C069-76. ICS: B01J031-24; B01J031-28; C07C067-36. ICA: C07B061-00. APPLICATION: JP 90-56097 7 Mar 1990. DOCUMENT TYPE: Patent CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Section cross-reference(s): 35 The title esters (I; R = C1-20 hydrocarbon residue), useful as intermediates for heat-resistant or liq. crystal polymers, are prepd. by reaction of 4,4'-dibromobiphenyl (II) with CO and ROH in the presence of a base over Pd-phosphine catalysts in which the phosphine/Pd mol equiv = 2.5-40. A mixt. of II 25, Et3N 60, PdCl2 0.25, and Ph3P 2.5 mmol in EtOH-C6H6 was heated at 150° and 100 kg/cm2 CO to give 24 mmol I (R = Et) and 0.3 mmol 4-BrC6H4C6H4CO2Et-4, vs. 7 mmol and 4 mmol, resp., with 0.In this experiment, several chemicals are used like 47230-38-6 and 7647-10-1 25 mmol Ph3P and 0.25 mmol PdCl2. .