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Chemical Structure| 66232-57-3 Chemical Structure| 66232-57-3

Structure of 66232-57-3

Chemical Structure| 66232-57-3

2-Methyl-6-nitrobenzoylchloride

CAS No.: 66232-57-3

4.5 *For Research Use Only !

Cat. No.: A443226 Purity: 97%

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Product Details of [ 66232-57-3 ]

CAS No. :66232-57-3
Formula : C8H6ClNO3
M.W : 199.59
SMILES Code : O=C(Cl)C1=C([N+]([O-])=O)C=CC=C1C
MDL No. :MFCD06797116

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Application In Synthesis of [ 66232-57-3 ]

* 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 [ 66232-57-3 ]

[ 66232-57-3 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 13506-76-8 ]
  • [ 66232-57-3 ]
YieldReaction ConditionsOperation in experiment
With oxalyl dichloride;N,N-dimethyl-formamide; In dichloromethane; at 20℃; for 2h; EXAMPLES; Example 1; 7-Methyl-1,2,3,4,4a,5-hexahydropyrazino[1,2-a]quinazolin-6-one; Part A. 2-Methyl-6-nitrobenzamide; To a solution of <strong>[13506-76-8]2-methyl-6-nitrobenzoic acid</strong> (10.0 g, 55.2 mmol) and oxalyl chloride (5.78 mL, 66.3 mmol) in dichloromethane (100 mL) was added DMF (5 drops). The reaction mixture stirred at RT for 2 hours and then concentrated to about 25 mL. The mixture was slowly poured into a cold solution (0 C.) of 7 N ammonia in methanol (500 mL). The reaction mixture was stirred at RT for 30 min, concentrated and the residue was dissolved in ethyl acetate (150 mL). The ethyl acetate solution was washed with with saturated sodium bicarbonate (2×200 mL), dried over sodium sulfate and concentrated to give the title compound (9.5 g, 67%) as a light brown solid.
With phosphorus pentachloride; In chloroform; cyclohexane; EXAMPLE 2 A mixture of 25 g of <strong>[13506-76-8]2-methyl-6-nitrobenzoic acid</strong> and 28.7 g of phosphorus pentachloride in 300 ml of cyclohexane was heated at reflux for 1 hour. The solution was concentrated and the residue was twice treated with chloroform and concentrated again to remove readily volatile materials and leave, as a residue, 2-methyl-6-nitrobenzoyl chloride as an oil.
With thionyl chloride;N,N-dimethyl-formamide; for 5.5h;Heating / reflux; To a solution of 2-methyl-6-nitrophenylbenzoic acid (3.02 g, 16.67 mmol) in thionyl chloride (0.56 M) was added DMF (cat.) and the mixture was heated to reflux for 5.5 h. The mixture was then cooled to room temperature and concentrated. The residue was then taken up in THF (30 mL) and added slowly over 20 min to a slurry of EPO <DP n="32"/>NaBH4 in THF (30 ml_) which pre-cooled to 0 C. The mixture was stirred at rt for 2 h and then quenched by addition of H2O followed by 4M HCI. The mixture was extracted with EtOAc. The combined organic phase was washed with sat. NaHCO3 and brine, dried over MgSO4 and concentrated to afford 2.52 g (90%) of the benzyl alcohol, an orange solid. 1H NMR (400 MHz, CDCI3) δ 2.55 (s, 3 H), 4.70 (s, 2 H), 7.35 (t, J=7.8 Hz, 1 H), 7.48 (d, J=7.6 Hz, 1 H), 7.70 (d, J=8.3 Hz, 1 H).
With thionyl chloride; In dichloromethane; at 80℃; for 3.5h; A mixture of <strong>[13506-76-8]2-methyl-6-nitrobenzoic acid</strong> (3.62g, 20.0 mmol) and thionyl chloride (15mL) was stirred at 80C for 3.5 hours. An excess of the thionyl chloride was distilled off under reduced pressure and the obtained residue was dissolved with methylene chloride (5mL). The solution was added dropwise to a methanol (10mL) solution of triethylamine (3.0mL) at 0C and stirred at 20-25C for 3 hours. The solvent was distilled off under reduced pressure. A saturated aqueous sodium bicarbonate solution was added to the obtained residue and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure to give methyl 2-methyl-6-nitrobenzoate (3.82g, 98%). 1H-NMR (CDCl3) δ :2.42(3H,s), 3.97(3H,s), 7.50(1H,t,J=7.9Hz), 7.55(1H,d, J=6.4Hz), 7.99(2H,d,J=8.0Hz)
With thionyl chloride; In toluene; for 2h;Reflux; A mixture of 2- methyl-6-nitrobenzoic acid (4.0 g, 22.0 mmol), toluene (20 mL) and thionyl chloride (SOC12)(10 g, 84 mmol) was heated at reflux for 2 h. The reaction was then concentrated at 45 C under reduced pressure, and THF (30 mL) was added to the resulting acid chloride. With cooling in an ice/water bath, N,N-diisopropylethylamine (10 mL) and o- toluidine (2.4 g, 22.4 mmol) were added. The reaction mixture was stirred at room temperature overnight. The mixture was then concentrated under reduced pressure, and the residue was dissolved in EtOAc (50 mL). This solution was washed with IN HCl (2 x 20mL) and an aqueous saturated NaHCO3 solution (2 x 20 mL) and concentrated in vacuo to afford 2-methyl-6-nitro-N-(o-tolyl)benzamide as an off-white solid (5.94 g, yield : 100%).

 

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