Home Cart Sign in  
Chemical Structure| 90924-16-6 Chemical Structure| 90924-16-6

Structure of 90924-16-6

Chemical Structure| 90924-16-6

*Storage: {[sel_prStorage]}

*Shipping: {[sel_prShipping]}

,{[proInfo.pro_purity]}

4.5 *For Research Use Only !

{[proInfo.pro_purity]}
Cat. No.: {[proInfo.prAm]} Purity: {[proInfo.pro_purity]}

Change View

Size Price VIP Price

US Stock

Global Stock

In Stock
{[ item.pr_size ]} Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price, item.vip_usd) ]}

US Stock: ship in 0-1 business day
Global Stock: ship in 5-7 days

  • {[ item.pr_size ]}

In Stock

- +

Please Login or Create an Account to: See VIP prices and availability

US Stock: ship in 0-1 business day
Global Stock: ship in 2 weeks

  • 1-2 Day Shipping
  • High Quality
  • Technical Support
Product Citations

Alternative Products

Product Details of [ 90924-16-6 ]

CAS No. :90924-16-6
Formula : C10H9NO2
M.W : 175.18
SMILES Code : [O-][N+]1=C2C=CC=C(OC)C2=CC=C1

Safety of [ 90924-16-6 ]

Application In Synthesis of [ 90924-16-6 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 90924-16-6 ]

[ 90924-16-6 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 90924-16-6 ]
  • [ 160893-07-2 ]
YieldReaction ConditionsOperation in experiment
40.1 mg With trichlorophosphate; In dichloromethane; at 60℃; for 3h;Inert atmosphere; To solution of 5-methoxyquinoline 2a (104 mg, 0.66 mmol) in CH2Cl2 (3 mL) was added meta-chloroperoxybenzoic acid (195 mg, 1.13 mmol) at 0 C for 30 min. The mixture was allowed to warm to room temperature and stirred for additional 3 h. The reaction is queched with 4 N NaOH and extracted with CH2Cl2. The combined organic extracts were washed with brine, dried over anhydrous MgSO4 and concentrated under reduced pressure to give the crude N-oxide, which was directly used for the next step without purification. To solution of the resulting N-oxide in CH2Cl2 (2.5 mL) was adeed phosphorus oxychloride (0.09 mL, 0.99 mmol). The reaction mixture was refluxed at 60 C for 3 h, allowed to cool to room temperature and poured into ice-water. The resulting mixture was treated with 4 N aqueous NaOH until pH reached to around 10. The organic phase was extracted with CH2Cl2 (3 x 5 mL), washed with brine, dried over anhydrous MgSO4, and concentrated under reduced pressure. The crude residue was purified by column chromatography on silica gel (EtOA/CH2Cl2/Hexane = 1:2:4) to give 5-methoxy-2chloroquinoline 4a (40.1 mg, 32%)
40.1 mg With trichlorophosphate; In dichloromethane; at 60℃; for 3h;Inert atmosphere; General procedure: To solution of 5-methoxyquinoline 6a (104 mg, 0.66 mmol) in CH2Cl2 (3mL) was added meta-chloroperoxybenzoic acid (195 mg, 1.13 mmol) at 0 C for 30 min. The mixture was allowed to warm to room temperature and stirred for additional 3 h. The reaction is queched with 4 N NaOH and extracted with CH2Cl2. The combined organic extracts were washed with brine, dried over anhydrous MgSO4 and concentrated under reduced pressure to give the crude N-oxide, which was directly used for the next step without purification. To solution of the resulting N-oxide in CH2Cl2 (2.5 mL) was adeed phosphorus oxychloride (0.09 mL, 0.99 mmol). The reaction mixture was refluxed at 60 C for 3 h, allowed to cool to room temperature and poured into ice-water. The resulting mixture was treated with 4 N aqueous NaOH until pH reached to around 10. The organic phase was extracted with CH2Cl2 (3 × 5 mL), washed with brine, dried over anhydrous MgSO4, and concentrated under reduced pressure. The crude residue was purified by column chromatography on silica gel (EtOAc/CH2Cl2/Hexane = 1:2:4) to give 2-chloro-5-methoxy-chloroquinoline 7a (40.1 mg, 32%) as a white solid:1HNMR (CDCl3, 300 MHz) delta 4.01 (s, 3H), 6.88 (dd, J = 7.2,1.5 Hz, 1H), 7.35 (d, J = 8.7 Hz, 1H), 7.59-7.67 (m, 2H),8.51 (d, J = 8.7 Hz, 1H).
  • 2
  • [ 90924-16-6 ]
  • [ 160893-04-9 ]
YieldReaction ConditionsOperation in experiment
65% With potassium carbonate; p-toluenesulfonyl chloride; In dichloromethane; water; at 20℃; for 18h; 4.4 5-Methoxyquinolin-2(1H)-one (3) p-Toluenesulfonyl chloride (5.55 g, 29.1 mol) was added portion wise at rt to a solution of compound 2 (4.09 g, 23.3 mmol) in 10% aqueous K2CO3 (60 mL) and DCM (60 mL) and the mixture was stirred at the same temperature for 18 h. Diethyl ether was added and the resultant precipitate was filtered, washed with diethyl ether and dried in oven at 65 C for 2 h to furnish the title compound as light yellow solid; yield: 2.651 g (65%); 1H NMR (400 MHz, CDCl3) delta 12.15 (br. s, 1H), 8.25 (d, J = 9.6 Hz, 1H), 7.45 (t, J = 8.4 Hz, 1H), 7.04 (d, J = 8.4 Hz, 1H), 6.67 (t, J = 9.2 Hz, 2H), 3.97 (s, 3H); 13C NMR (100 MHz, CDCl3) delta 164.61, 156.09, 139.72, 135.74, 131.40, 119.67, 110.91, 108.66, 102.78, 55.73.
65% With potassium carbonate; p-toluenesulfonyl chloride; In dichloromethane; at 20℃; for 18h;Inert atmosphere; (4) under an argon atmosphere, 5-methoxyquinoline-N-oxide (4.1 g, 23.3 mmol) was dissolved in a 10% potassium carbonate solution (60 mL) and dichloromethane (60 mL) p-toluenesulfonyl chloride (5.6 g, 29.1 mmol) was slowly added. The mixture was stirred at room temperature for 18 hours, the completion of the reaction was confirmed by TLC (hexane: ethyl acetate = 1: 2). After adding diethyl ether to the reaction mixture, The formed precipitate was washed with diethyl ether and then dried in an oven (65 C) for 2 hours to obtain the desired compound (2.7 g, 65% yield).
  • 3
  • [ 90924-16-6 ]
  • [ 643069-46-9 ]
  • [ 1421517-81-8 ]
YieldReaction ConditionsOperation in experiment
45% With N,N-dimethyl-formamide; phosphorus(V) oxybromide; In dichloromethane; at 0 - 25℃; for 6.0h;Inert atmosphere; General procedure: To a stirred solution of the appropriate azine N-oxides in anhydrous CH2Cl2 (0.1 M) at 0 C is added POBr3 (1.2 equiv) followed by dropwise addition of DMF (0.5 equiv) under argon. The resulting reaction mixture was warmed to 25 C and stirred for several hours until the reaction is complete as indicated by TLC. Saturated aqueous sodium carbonate solution is added to the reaction mixture slowly to adjust the pH to 7-8. The resulting mixture is separated and the aqueous phase is extracted with CH2Cl2 thoroughly. The organic phase is combined and washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure to afford the crude product, which is purified by flash column chromatography using PE/EA (100:1) as eluent.
 

Historical Records