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Chemical Structure| 203179-00-4 Chemical Structure| 203179-00-4

Structure of 203179-00-4

Chemical Structure| 203179-00-4

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Product Details of [ 203179-00-4 ]

CAS No. :203179-00-4
Formula : C9H9BrClNO2
M.W : 278.53
SMILES Code : O=C(C1=CC=C(C(Br)=C1)Cl)N(C)OC
MDL No. :MFCD26398559

Safety of [ 203179-00-4 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P280-P301+P312-P302+P352-P305+P351+P338

Application In Synthesis of [ 203179-00-4 ]

* 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 [ 203179-00-4 ]

[ 203179-00-4 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 42860-10-6 ]
  • [ 6638-79-5 ]
  • [ 203179-00-4 ]
YieldReaction ConditionsOperation in experiment
85% With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine; In N,N-dimethyl-formamide; at 0℃; for 12h; 3-Bromo-4-chlorobenzoic acid (1.0 g, 4.24 mmol, 1.0 eq) was dissolved in dry DMF and stirred for 10 minutes. The solution was cooled to 0 °C and treated with N,O-dimethyI hydroxylamine hydrochloride (0.828 mg, 8.48 mmol, 2.0 eq), 1-hydroxybenzotrizole (860 mg, 6.36 mmol, 1.5 eq), N,JV-diisopropyl ethylamine (820 mg, 6.37 mmol, 1.5 eq), and EDC HCl (1.2 g, 6,37 mmol, 1.5 eq). The reaction mixture was stirred for 12 h, evaporated under reduced pressure and diluted with water (25 mL). The aqueous layer was extracted with ethyl acetate. The organic layer was dried under anhydrous Na2SQi and concentrated under vacuum. The residue was purified by flash column chromatography on silica gel (60-120) eluting with 5-10 percent ethyl acetate/hexane to afford the desired product (1 g, 85percent). 1H NMR (400 MHz, <n="203"/>CD3OD) delta 3.34 (s, 3H), 3.57 (beta, 3H), 7.47-7.49 (d, 1H), 7.71-7.74 (d, 1H), 7.85-7.88 (d, 1H). MS (ESI): 278.2 (M+).
79% (RS)-4-(3-Bromo-4-chloro-phenyl)-4-(4-methoxy-3-methyl-phenyl)-4,5-dihydro-oxazol-2-ylamine 3-Bromo-4-chloro-N-methoxy-N-methylbenzamide [203179-00-4] Carbonyldiimidazole (7.2 g, 0.045 mol) was added in portions to a stirred suspension of <strong>[42860-10-6]3-bromo-4-chlorobenzoic acid</strong> (10.0 g, 0.042 mol) in dichloromethane (120 mL). The reaction mixture was stirred at room temperature for 30 minutes then at reflux for 30 minutes. Triethylamine (6.3 mL, 0.045 mol) and N,O-dimethylhydroxylamine hydrochloride (4.2 g, 0.043 mol) were added and the reaction mixture was stirred at room temperature overnight, then diluted with water (75 mL) and the layers separated. The aqueous fraction was extracted with dichloromethane (2*50 mL) and the combined organic extracts were washed with citric acid (10percent; 2*50 mL), NaHCO3 (50 mL) and brine (50 mL), dried (sodium sulfate) and concentrated to give 3-bromo-4-chloro-N-methoxy-N-methylbenzamide as a colourless oil (9.3 g, 79percent). 1H NMR (300 MHz; DMSO-d6) 7.98 (1H, s, Ar), 7.60 (1H, d, J 7.2, Ar), 7.48 (1H, d, J 7.2, Ar), 3.54 (3H, s, Me), 3.36 (3H, s, Me).
 

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