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Chemical Structure| 129822-38-4 Chemical Structure| 129822-38-4

Structure of 129822-38-4

Chemical Structure| 129822-38-4

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Product Details of [ 129822-38-4 ]

CAS No. :129822-38-4
Formula : C12H16FNO2
M.W : 225.26
SMILES Code : O=C(OC(C)(C)C)NC1=CC=CC(F)=C1C

Safety of [ 129822-38-4 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319
Precautionary Statements:P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313

Application In Synthesis of [ 129822-38-4 ]

* 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 [ 129822-38-4 ]

[ 129822-38-4 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 24424-99-5 ]
  • [ 443-86-7 ]
  • [ 129822-38-4 ]
YieldReaction ConditionsOperation in experiment
93% In tetrahydrofuran; for 16h;Heating / reflux; A 2-L round bottom flask, equipped with a magnetic stirrer and a reflux condenser and set in a heating mantle, was charged with <strong>[443-86-7]3-fluoro-2-methylaniline</strong> (99.1 g, 0.793 mol), di-tert-butyl dicarbonate (190.2 g, 0.872 mol, 1.1 eq) and THF (500 mL). The solution was heated at reflux for 16 hours. The completeness of the reaction was monitored by HPLC (see analytical method below). The reaction mixture was allowed to cool to room temperature and then the solution was concentrated in vacuo (bath temp. 37° C.). The oily residue (255 g) was mixed with heptane (250 mL) which caused slow crystallization of the product. More solvent was removed in vacuum (about 150 mL), thereby resulting in a thick slurry. The slurry was further diluted with 250 mL of heptane and the first crop of crystals was filtered, washed with small amount of cold heptane and dried in air on the filter (109.4 g as white crystals, purity>99.9percent). The filtrate was concentrated in vacuum to about 100 mL and the second crop of crystals was collected by filtration, washed with heptane and dried in air (42.0 g). The filtrate was further concentrated (about 70 mL) and then chilled in an ice bath. The third crop of crystals was isolated the same way (14.9 g, purity 99percent). Total yield of product was 166.3 g (93percent theor.). LCMS (ES+), m/z: 226 (M+H+). HPLC analytical method: Prodigy.(TM). ODS3 4.6.x.50 cm column, 1 mL/min flow rate, gradient 10 to 90percent over 9 min of MeCN-water containing 0.02percent of TFA. Retention times: tert-Butyl 3-fluoro-2-methylphenylcarbamate (6.88'), <strong>[443-86-7]3-fluoro-2-methylaniline</strong> (2.63').
7.1 g In tetrahydrofuran; for 16h;Reflux; Reference Example 5a 4-Fluoro-2-methyl-2,3-dihydro-1H-indole Step 1atert-Butyl (3-fluoro-2-methylphenyl)carbamate 9.9 g of di-tert-Butyl dicarbonate are added to a solution of 5 g of <strong>[443-86-7]3-fluoro-2-methylaniline</strong> in 25 ml of tetrahydrofuran. The reaction mixture is refluxed with stirring for 16 hours, then it is cooled to ambient temperature and concentrated to dryness under reduced pressure. The residue is triturated from 20 ml of cyclohexane and the precipitate obtained is filtered off through sintered glass, dried with suction and then dried under reduced pressure at 40° C. 7.1 g of tert-butyl (3-fluoro-2-methylphenyl)carbamate are thus obtained in the form of a shiny white solid, the characteristics of which are the following:Mass spectrometry: EI: [M]+. m/z=225Method ARetention time Tr (min)=1.04;m/z 170; base peak m/z: 211Melting point (Kofler): 72° C.
  • 2
  • [ 129822-38-4 ]
  • [ 1260383-51-4 ]
 

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