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Chemical Structure| 31720-89-5 Chemical Structure| 31720-89-5

Structure of 31720-89-5

Chemical Structure| 31720-89-5

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Product Details of [ 31720-89-5 ]

CAS No. :31720-89-5
Formula : C13H13NO4
M.W : 247.25
SMILES Code : O=C(C(N1)=CC2=C1C=CC(OC(C)=O)=C2)OCC

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Application In Synthesis of [ 31720-89-5 ]

* 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 [ 31720-89-5 ]

[ 31720-89-5 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 31720-89-5 ]
  • [ 103347-14-4 ]
  • [ 350589-08-1 ]
YieldReaction ConditionsOperation in experiment
potassium iodide; In ethyl acetate; N,N-dimethyl-formamide; iii) Ethyl 5-acetoxy-N-(3-methoxy-4-chlorobenzyl)indole-2-carboxylate To a solution of ethyl 5-acetoxyindole-2-carboxylate (283 mg) in DMF (6 ml) was added sodium hydride (54 mg, 60% dispersion in oil). The mixture was stirred for 30 minutes, a catalytic amount of potassium iodide and a solution of <strong>[103347-14-4]3-methoxy-4-chlorobenzyl bromide</strong> (345 mg) in DMF (2 ml) was added. The mixture was stirred for 2 hours, quenched with water and extracted with ethyl acetate. The organic extracts were dried, evaporated and the resulting gum was purified by column chromatography elutig with 20% ethyl acetate/isohexane to give the desired product as an oil which solidified on standing (310 mg, 63%). NMR (CDCl3): d 1.4 (t, 3H), 2.3 (s, 3H), 3.8 (s, 3H), 4.35 (q, 2H, 5.8 (s, 2H), 6.5 (dd, 1H), 6.7 (d, 1H), 7.05 (dd, 1H), 7.2-7.4 (m, 4H); m/z 402 (M+H+).
  • 2
  • [ 108-24-7 ]
  • [ 24985-85-1 ]
  • [ 31720-89-5 ]
YieldReaction ConditionsOperation in experiment
100% With dmap; at 80℃; for 4h; [00213] A stirred solution of <strong>[24985-85-1]ethyl 5-hydroxyindole-2-carboxylate</strong> (7.79 g) and 4-dimethylaminopyridine (20 mg) in acetic anhydride (80 ml) was heated at 80 C. for 4 hours. The reaction was concentrated in vacuo and the residue was dissolved in ethyl acetate. Combined organic extracts were washed with hydrochloric acid (2 M), saturated aqueous sodium hydrogen carbonate solution, water, aqueous saturated sodium chloride solution and dried. The solution was concentrated in vacuo to yield the product as a yellow solid (9.39 g,100%). NMR: delta 1.20 (t, 3H), 2.10 (s, 3H), 4.19 (q, 2H), 6.86 (dd, 1H), 6.97 (d, 1H), 7.20 (s, 1H), 7.29 (d, 1H); m/z 248 (M+H+).
  • 3
  • [ 24985-85-1 ]
  • [ 31720-89-5 ]
YieldReaction ConditionsOperation in experiment
100% With dmap; In acetic anhydride; ethyl acetate; ii Ethyl 5-acetoxyindole-2-carboxylate A stirred solution of <strong>[24985-85-1]ethyl 5-hydroxyindole-2-carboxylate</strong> (7.79 g) and 4-dimethylaminopyridine (20 mg) in acetic anhydride (80 ml) was heated at 80 C. for 4 hours. The reaction was concentrated in vacuo and the residue was dissolved in ethyl acetate. Combined organic extracts were washed with hydrochloric acid (2 M), saturated aqueous sodium hydrogen carbonate solution, water, aqueous saturated sodium chloride solution and dried. The solution was concentrated in vacuo to yield the product as a yellow solid (9.39 g,100%). NMR(CD3SOCD3): delta 1.20 (t, 3H), 2.10 (s, 3H), 4.19 (q, 2H), 6.86 (dd, 1H), 6.97 (d, 1H), 7.20 (s, 1H), 7.29 (d, 1H); m/z 248 (MH+).
100% With dmap; In acetic anhydride; ethyl acetate; ii) Ethyl 5-acetoxyindole-2-carboxylate A stirred solution of <strong>[24985-85-1]ethyl 5-hydroxyindole-2-carboxylate</strong> (7.79 g) and 4-dimethylaminopyridine (20 mg) in acetic anhydride (80 ml) was heated at 80 C. for 4 hours. The reaction was concentrated in vacuo and the residue was dissolved in ethyl acetate. Combined organic extracts were washed with hydrochloric acid (2 M), saturated aqueous sodium hydrogen carbonate solution, water, aqueous saturated sodium chloride solution and dried. The solution was concentrated in vacuo to yield the product as a yellow solid (9.39 g, 100%). NMR: 1.20 (t, 3H), 2.10 (s, 3H), 4.19 (q, 2), 6.86 (dd, 1H), 6.97 (d, 1H), 7.20 (s, 1H), 7.29 (d, 1H); m/z 248 (M+H+).
 

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