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Chemical Structure| 127168-91-6 Chemical Structure| 127168-91-6

Structure of 127168-91-6

Chemical Structure| 127168-91-6

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Product Details of [ 127168-91-6 ]

CAS No. :127168-91-6
Formula : C10H10Br2O2
M.W : 321.99
SMILES Code : O=C(OC)C1=CC=CC(CBr)=C1CBr
MDL No. :MFCD18642874

Safety of [ 127168-91-6 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of [ 127168-91-6 ]

* 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 [ 127168-91-6 ]

[ 127168-91-6 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 15012-36-9 ]
  • [ 127168-91-6 ]
YieldReaction ConditionsOperation in experiment
100% With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile); In tetrachloromethane; at 80℃; for 16h; Step a. To a solution of <strong>[15012-36-9]methyl 2,3-dimethylbenzoate</strong> (CAS Number 15012-36-9, available from Accela Chembio) (5 g, 30.48 mmol) in CC14 (40 ml) were added NBS (10.8 g, 61 mmol) and AIBN (0.2 g, 0.91 mmol) at rt. The reaction mixture was heated at 80C for 16 h. The reaction mixture was filtered and evaporate to yield methyl 2,3-bis(bromomethyl)benzoate (10.1 g, quantitative). This material was used directly for the next step without further purification.
96% With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile); In tetrachloromethane; for 2h;Heating / reflux; Compound 5 (53.3 g; 0.32 mol) was dissolved in carbon tetrachloride (850 mL), under nitrogen. To the solution was added N-bromosuccinimide (115.5 g; 0.65 mol) and 2,2'-azobis(2-methyl-propionitrile (1.6 g; 0.010 mol). The reaction mixture was stirred at reflux for approximately 2 hours and the colour of this mixture changed from yellow to colorless. It was allowed to cool to room temperature and filtered off. The filtrate was evaporated in vacuo to give compound 6 (98.7 g; 96%) as a yellow liquid.1H-NMR (300 MHz, CDCI3): delta 3.95 (s, 3H), 4.68 (s, 2H), 5.14 (s, 2H), 7.36 (t, 1H), 7.55 (dd, 1 H), 7.90 (dd, 1 H). GC-MS m/z = 322.
94% With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; for 4h;Reflux; [0506] Preparation of compound 3 (Scheme 13): To a solution of 2 (2.1 g, 13.3 mmol, 1.0 eq) in Cd4 (30 mL) was added NBS (4.7 g, 26.6 mmol, 2.0 eq) and BPO (0.2 g). The mixture was heated to reflux for 4h. The reaction was diluted with DCM (30 mL), washed by water (2 x 30 mL), dried over Na2SO4, concentrated to give a crude product, which was purified by column chromatography to give compound 3; methyl 2,3-bis(bromomethyl)benzoate (4.0 g, 94%).
With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile); In tetrachloromethane;Heating / reflux; To a stirred solution of <strong>[15012-36-9]methyl 2,3-dimethylbenzoate</strong> (1.75 g, 10.7 mmol) in carbon tetrachloride (35 mL) under argon was added freshly recrystallized N-bromosuccinimide (3.90 g, 21.9 mmol) and AIBN (50 mg). The reaction mixture was heated to reflux under argon for 4 h and then cooled and filtered. Evaporation gave a yellow oil, 3.53 g, predominantly methyl 2,3-bis(bromomethyl)benzoate.

  • 2
  • [ 56-23-5 ]
  • [ 15012-36-9 ]
  • [ 127168-91-6 ]
YieldReaction ConditionsOperation in experiment
With N-Bromosuccinimide; dibenzoyl peroxide; (2) 24.6 g of <strong>[15012-36-9]methyl 2,3-dimethylbenzoate</strong>, 53.4 g of N-bromosuccinimide, 300 mg of benzoyl peroxide, and 300 ml of carbontetrachloride were processed in a similar manner as in Reference Example 6-(1) to give a mixture containing methyl 2,3-bis-(bromomethyl)benzoate as a major component.
 

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