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Chemical Structure| 112299-61-3 Chemical Structure| 112299-61-3

Structure of 112299-61-3

Chemical Structure| 112299-61-3

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Product Details of [ 112299-61-3 ]

CAS No. :112299-61-3
Formula : C9H12BrN
M.W : 214.10
SMILES Code : NC1=CC=C(C(C)C)C(Br)=C1
MDL No. :MFCD23708531

Safety of [ 112299-61-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302+H312+H332-H315-H319
Precautionary Statements:P501-P261-P270-P271-P264-P280-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330-P302+P352+P312-P304+P340+P312

Application In Synthesis of [ 112299-61-3 ]

* 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 [ 112299-61-3 ]

[ 112299-61-3 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 101980-41-0 ]
  • [ 112299-61-3 ]
YieldReaction ConditionsOperation in experiment
3 g With iron; acetic acid; In methanol; at 20.0℃; for 4.0h; b) 3-bromo-4-isopropylaniline. 2-Bromo-1-isopropyl-4-nitrobenzene (5.86 g, 24.2 mmol) was dissolved in methanol (50 mL) and acetic acid (50 mL). Iron powder (6.78 g, 121 mmol) was added batchwise. The mixture was stirred for 4 h at room temperature and the reaction was monitored by TLC (ethyl acetate/petroleum ether 1 :5). After the starting material was consumed completely, the mixture was filtered. Methanol was removed by evaporation. The residue was neutralized with aqueous ammonia (100 mL) and extracted with ethyl acetate (100 mL x 3). The extracts were washed with brine, dried (Na2S04), and evaporated under reduced pressure. The crude product was purified by chromatography (silica gel, 2-10% ethyl acetate/petroleum ether) to give the title compound (3.0 g, 58%). LCMS (ES+) m/e 214 [M+H]+.
With platinum on activated charcoal; hydrogen; zinc dibromide; In methanol; water; at 20.0℃; under 3750.38 Torr;Autoclave; Inert atmosphere; 2- Bromo-l-isopropyl-4-nitrobenzene (XI) (20 g, 78.1 mmol, 95.8 GC% by area), methanol (400 ml), platinum on carbon (5% of platinum, poisoned with sulphur, moist with water) (1.0 g, 0.090 mmol) and zinc dibromide (265 mg, 1.18 mmol) were placed in a 600 ml autoclave. The autoclave was subsequently flushed with nitrogen and pressurized to 5 bar with hydrogen at room temperature. The contents of the autoclave were filtered through Celite, washed with methanol and the solvent was distilled off under reduced pressure. 3-Bromo-4- isopropylaniline (17.4 g, 94.5 LC-% by area, 97.7 GC-% by area, >99 % of theory) was obtained as a brown oil. 3- Bromo-4-isopropylaniline of the formula (VII) -NMR (600 MHz, (CDCI3): delta = 7.04 (d, 1H), 6.89 (d, 1H), 6.61 (dd, 1H), 3.56 (br s, 2H), 3.25 (heptet, 1H), 1.19 (s, 3H), 1.18 (s, 3H) ppm. GC-MS: m/e = 213 [M+].
18 g With ammonium chloride; zinc; In ethanol; water; at 40.0℃; for 1.0h; 2-Bromo-1-isopropyl-4-nitrobenzene (22.2 g) and ammonium chloride (58.4 g) were added to a mixed solvent of ethanol (445 mL) and water (445 mL). Zinc powder (35.7 g) was gradually added so that the temperature of the reaction solution did not exceed 40C, after which the mixture was stirred for one hour. The insoluble matter was filtered off through celite, and the filtrate was washed with ethanol and concentrated to about 500 mL under reduced pressure. The residue was extracted with ethyl acetate twice. The combined organic layers were washed with saturated saline and then dried over sodium sulfate. The drying agent was removed by filtration, the filtrate was concentrated, and the resulting residue was purified by silica gel column chromatography to give the target compound (18 g).
 

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