882880-12-8

Basic information

• Product Name: 2(1H)-Quinolinone,7,7'-[1,4-butanediylbis(oxy)]bis[3,4-dihydro-
• Synonyms: 2(1H)-Quinolinone,7,7'-[1,4-butanediylbis(oxy)]bis[3,4-dihydro-;1,4-Bis[3,4-dihydro-2(1H)-quinolinon-7-oxy]butane;7,7'-[1,4-Butanediylbis(oxy)]bis[3,4-dihydro-2(1H)-quinolinone;Aripiprazole IMpurity D;7,7'-(butane-1,4-diylbis(oxy))bis(3,4-dihydroquinolin-2(1H)-one);Aripiprazole USP impurity D;Aripiprazole Diquinoline Butanediol Impurity
• CAS NO: 882880-12-8
• Molecular Formula: C22H24N2O4
• Molecular Weight: 380.44
• Product Categories: Aromatics;Heterocycles;Impurities;Intermediates & Fine Chemicals;Pharmaceuticals
• Mol File: 882880-12-8.mol
• Article Data: 10

Chemical Properties

• Boiling Point: 673.2±55.0 °C(Predicted)
• Appearance: /
• Density: 1.226±0.06 g/cm3(Predicted)
• Storage Temp.: Refrigerator
• Solubility: DMSO (Slightly), Ethyl Acetate (Slightly, Heated), Methanol (Sparingly)
• PKA: 14.11±0.20(Predicted)
• CAS DataBase Reference: 2(1H)-Quinolinone,7,7'-[1,4-butanediylbis(oxy)]bis[3,4-dihydro-(CAS DataBase Reference)
• NIST Chemistry Reference: 2(1H)-Quinolinone,7,7'-[1,4-butanediylbis(oxy)]bis[3,4-dihydro-(882880-12-8)
• EPA Substance Registry System: 2(1H)-Quinolinone,7,7'-[1,4-butanediylbis(oxy)]bis[3,4-dihydro-(882880-12-8)

Safety Data

• Hazardous Substances Data: 882880-12-8(Hazardous Substances Data)

Usage

Chemical Properties

White Solid

Uses

Different sources of media describe the Uses of 882880-12-8 differently. You can refer to the following data:
1. 1,4-Bis[3,4-dihydro-2(1H)-quinolinon-7-oxy]butane is an impurity found in the process for the preparation of Aripiprazole (A771000).
2. Intermediate used in the process for the preparation of Aripiprazole (A771000).

Upstream product

• 22246-18-0 7-hydroxy-3,4-dihydro-2-(1H)-quinolinone 
• 952308-47-3 7-(4-iodobutoxy)-3,4-dihydroquinolin-2(1H)-one 
• 110-56-5 1,4-dichlorobutane 
• 119532-26-2 1-(2,3-dichlorophenyl)-piperazine hydrochloride 
• 120004-79-7 7-(4-chlorobutoxy)-3,4-dihydroquinoline-2(1H)-one 
• 129722-34-5 7-(4-bromobutoxy)-3,4-dihydro-2(1H)-quinolinone 
• 110-52-1 1,4-dibromo-butane 
• 6940-78-9 4-chlorobutyl bromide 

Relevant articles and documents

Industry-Oriented Route Evaluation and Process Optimization for the Preparation of Brexpiprazole

Efforts toward route evaluation and process optimization for the preparation of brexpiprazole (1) are described. Starting from commercially available dihydroquinolinone 11, a three-step synthesis route composed of O-alkylation, oxidation, and N-alkylation was selected for industry-oriented process development aiming to reduce side reactions and achieve better impurity profiles. The reaction conditions of the three steps were investigated, and the control strategy for the process-related impurities was established. The optimized process was validated on the kilogram scale and now is viable for commercialization, with the results of not less than 99.90% purity of 1 (by HPLC) and not more than 0.05% of persistent impurities 15 and 16.

Synthesis of 1,4-bis[3,4-dihydro-2-(1H)-quinoline-7-oxo] butane

The invention aims to provide a novel preparation method of an aripiprazole process impurity 1,4-bis[3,4-dihydro-2-(1H)-quinoline-7-oxo] butane, provides a basis for qualitatively and quantitatively analyzing impurities in a drug, has important meaning in synthesizing high quality aripiprazole, and provides a powerful guarantee for safe medication of a patient.

A PROCESS FOR PURIFICATION OF 7-(4-BROMOBUTOXY)-3,4 DIHYDROCARBOSTYRIL, AN INTERMEDIATE FOR MANUFACTURE OF ARIPIRAZOLE

A process for the purification of 7- (4-bromobutoxy)-3,4- dihydrocarbostyril, substantially free of dimer impurity, said process comprising providing a solution of crude 7- (4-bromobutoxy)-3,4- dihydrocarbostyril containing the dimer impurity in an organic solvent selected from the group of halogenated hydrocarbon solvent, aromatic hydrocarbon, alcohols, alkyl esters of C1-C4 alkanoic acids, ethers, diethyl ester and ketones ; converting to a salt by the addition of an inorganic acid; separation of 1,4-bis [3,4-dihydro-2 (1H)-quinolinone-7-oxy] butane salt (dimer impurity salt) from the mixture, based on the difference in at least one physical property of 7- (4-bromobutoxy)-3,4- dihydrocarbostyril salt and the salt of dimer impurity; liberating the 7- (4-bromobutoxy)-3,4- dihydrocarbostyril salt by treating with an inorganic base; precipitating 7- (4-bromobutoxy)-3,4- dihydrocarbostyril by adding an anti-solvent.