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Chemical Structure| 77228-67-2 Chemical Structure| 77228-67-2

Structure of 77228-67-2

Chemical Structure| 77228-67-2

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Product Details of [ 77228-67-2 ]

CAS No. :77228-67-2
Formula : C8H6BrClO3
M.W : 265.49
SMILES Code : O=C(O)COC1=CC=C(Br)C=C1Cl
English Name :2-(4-Bromo-2-chlorophenoxy)acetic acid
MDL No. :MFCD03422201

Safety of [ 77228-67-2 ]

Application In Synthesis of [ 77228-67-2 ]

* 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 [ 77228-67-2 ]

[ 77228-67-2 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 614-61-9 ]
  • [ 77228-67-2 ]
YieldReaction ConditionsOperation in experiment
With sodium chlorate; hydrogen bromide; acetic acid
With aluminium trichloride; bromine at 80℃;
  • 2
  • [ 77228-67-2 ]
  • [ 3544-24-9 ]
  • [ 1000887-37-5 ]
YieldReaction ConditionsOperation in experiment
94.6% With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide 27 3-[2-(4-bromo-2-cUorc>-phenoxy)acetyl-arnino]-benzaiτiideA mixture of 4-bromo-2-chloro-phenol (2.0 g, 9.64 mmol) and anhydrous potassium carbonate (4.0 g, 28.92 mmol) in dry DMF (30 ml) was heated at 60oC for Ih under Ar atmosphere. The mixture was then cooled to room temperature and ethyl chloroacetate (1.24 ml, 11.57 mmol) was added through septum using syringe. The mixture was stirred overnight at room temperature and poured into water with stirring. Stirring continued for 10 min, and then partitioned between ethyl acetat and water. The organic phase washed with brine, dried (anhydrous MgSO4), and concentrated. The residue was purified by silica gel column chromatography (n-Hexane : Ethyl acetat : MeOH = 15 : 3 : 1) to give (4-Bromo-2-chloro-phenoxy)-acetic acid ethyl ester as a colorless oil(2.98(2.83) g, >100% yield). To (4-boromo-2-chloro-phehoxy)-acetic acid (132.8 mg, 0.5 mmol), 3-amino- benzamide (102.2 mg, 0.75 mmol), N-(3-dimethylaminopropyl>N'-ethyl carbodiimideHCl (EDC) (143.8 mg, 0.75 mmol) and 1-hydroxybenzotriazole (HOBt) (101.4 mg, 0.75 mmol) in DMF (5 ml) was added N, N- diisopropylethyamine, redistilled (DIPEA) (0.13 ml, 0.75 mmol). The mixture was stirred overnight, and then partitioned between ethyl acetate and water. The organic phase was washedwith brine, dried (MgSO4 anh), and concentrated. The residue was purified by silica gel flash column chromatography (CH2CH2:Me0H = 10:1) to give 3-[2-(4-bromo-2-chloro-phenoxy)aceryl-amino]-benzamide as a white solid (181.4 mg, 94.6% yield).1H-NMR (DMSO-de) 10.30 (IH, s, NH), 8.06 (IH, s, aromatic-H), 7.94 (IH, s, NH2), 7.70 7.77 (2H, m, aromatic-H), 7.57 (IH, d, J = 7.2 Hz, aromatic-H), 7.48 (IH, dd, J = 16.2 & 2.4 Hz, aromatic-H), 7.35 7.42 (2H, m, aromatic-H, NH2), 7.06 (IH, d, J= 9 Hz, armatic-H), 4.87 (2H, s, CH2).
94.6% With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide 27 A mixture of 4-bromo-2-chloro-phenol (2.0 g, 9.64 mmol) and anhydrous potassium carbonate (4.0 g, 28.92 mmol) in dry DMF (30 ml) was heated at 60° C. for 1 h under Ar atmosphere. The mixture was then cooled to room temperature and ethyl chloroacetate (1.24 ml, 11.57 mmol) was added through septum using syringe. The mixture was stirred overnight at room temperature and poured into water with stirring. Stirring continued for 10 min, and then partitioned between ethyl acetate and water. The organic phase washed with brine, dried (anhydrous MgSO4), and concentrated. The residue was purified by silica gel column chromatography (n-Hexane:Ethyl acetate:MeOH=15:3:1) to give (4-Bromo-2-chloro-phenoxy)-acetic acid ethyl ester as a colorless oil (2.98 (2.83) g, >100% yield). To (4-bromo-2-chloro-phenoxy)-acetic acid (132.8 mg, 0.5 mmol), 3-amino-benzamide (102.2 mg, 0.75 mmol), N-(3-dimethylaminopropyl)-N'-ethyl carbodiimide HCl (EDC) (143.8 mg, 0.75 mmol) and 1-hydroxybenzotriazole (HOBt) (101.4 mg, 0.75 mmol) in DMF (5 ml) was added N,N-diisopropylethylamine, redistilled (DIPEA) (0.13 ml, 0.75 mmol). The mixture was stirred overnight, and then partitioned between ethyl acetate and water. The organic phase was washed with brine, dried (MgSO4 anh), and concentrated. The residue was purified by silica gel flash column chromatography (CH2CH2:MeOH=10:1) to give 3-[2-(4-bromo-2-chloro-phenoxy)acetyl-amino]-benzamide as a white solid (181.4 mg, 94.6% yield).1H-NMR (DMSO-d6) 10.30 (1H, s, NH), 8.06 (1H, s, aromatic-H), 7.94 (1H, s, NH2), 7.70 7.77 (2H, m, aromatic-H), 7.57 (1H, d, J=7.2 Hz, aromatic-H), 7.48 (1H, dd, J=16.2 & 2.4 Hz, aromatic-H), 7.35 7.42 (2H, m, aromatic-H, NH2), 7.06 (1H, d, J=9 Hz, aromatic-H), 4.87 (2H, s, CH2).
 

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