ChemicalBook--->CAS DataBase List--->723281-72-9

723281-72-9

723281-72-9 Structure

723281-72-9 Structure
IdentificationBack Directory
[Name]

6-BROMO-4-CHLORO-3-NITROQUINOLINE
[CAS]

723281-72-9
[Synonyms]

6-BROMO-4-CHLORO-3-NITROQUINOLINE
Quinoline, 6-broMo-4-chloro-3-nitro-
[Molecular Formula]

C9H4BrClN2O2
[MDL Number]

MFCD09909913
[MOL File]

723281-72-9.mol
[Molecular Weight]

287.5
Chemical PropertiesBack Directory
[Boiling point ]

387.6±37.0 °C(Predicted)
[density ]

1.834
[storage temp. ]

Inert atmosphere,Store in freezer, under -20°C
[pka]

-1.08±0.27(Predicted)
[Appearance]

White to light yellow Solid
[InChI]

InChI=1S/C9H4BrClN2O2/c10-5-1-2-7-6(3-5)9(11)8(4-12-7)13(14)15/h1-4H
[InChIKey]

KHKPVEMMXJCWGP-UHFFFAOYSA-N
[SMILES]

N1C2C(=CC(Br)=CC=2)C(Cl)=C([N+]([O-])=O)C=1
[CAS DataBase Reference]

723281-72-9
Safety DataBack Directory
[Symbol(GHS) ]

Exclamation Mark (GHS07)
GHS07
[Signal word ]

Warning
[Hazard statements ]

H315-H319-H335
[Precautionary statements ]

P261-P280a-P304+P340-P305+P351+P338-P405-P501a
Spectrum DetailBack Directory
[Spectrum Detail]

6-BROMO-4-CHLORO-3-NITROQUINOLINE(723281-72-9)1HNMR
6-BROMO-4-CHLORO-3-NITROQUINOLINE(723281-72-9)1HNMR
Hazard InformationBack Directory
[Synthesis]

6-Bromo-3-nitro-4-quinolinol

853908-50-6

6-BROMO-4-CHLORO-3-NITROQUINOLINE

723281-72-9

Step 3: 6-bromo-4-hydroxy-3-nitroquinoline (product of Step 2, 20 g, 74.3 mmol) was mixed with phosphorus oxychloride (POCl3, 150 mL, 1613 mmol) and the reaction was stirred for 45 minutes. Upon completion of the reaction, the mixture was cooled to room temperature and slowly poured into ice water to quench the reaction. The precipitated solid was collected by filtration, washed with ice-cold water and subsequently dissolved in dichloromethane (CH2Cl2). The organic layer was washed with cold saturated saline and dried over anhydrous sodium sulfate (Na2SO4). The solvent was removed by evaporation under reduced pressure to give 6-bromo-4-chloro-3-nitroquinoline. Yield: 8 g (38%); 1H NMR (CDCl3, 500 MHz): δ 9.275 (s, 1H), 8.611-8.615 (d, 1H, J = 2 Hz), 8.100-8.118 (d, 1H, J = 9 Hz), 8.026-8.048 (dd, 1H, J = 8.5 Hz, 2 Hz).

[References]

[1] Patent: US2015/320727, 2015, A1. Location in patent: Paragraph 0555; 0556
[2] Patent: WO2015/145369, 2015, A1. Location in patent: Page/Page column 38
[3] Patent: WO2009/155527, 2009, A2. Location in patent: Page/Page column 142
[4] MedChemComm, 2016, vol. 7, # 2, p. 297 - 310
[5] Patent: CN108456165, 2018, A. Location in patent: Paragraph 0047; 0081-0082
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