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Chemical Structure| 136812-31-2 Chemical Structure| 136812-31-2

Structure of 136812-31-2

Chemical Structure| 136812-31-2

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Product Details of [ 136812-31-2 ]

CAS No. :136812-31-2
Formula : C10H5BrClNO
M.W : 270.51
SMILES Code : O=CC1=CC2=CC=C(Br)C=C2N=C1Cl
MDL No. :MFCD06239277

Safety of [ 136812-31-2 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H301
Precautionary Statements:P301+P310
Class:6.1
UN#:2811
Packing Group:

Application In Synthesis of [ 136812-31-2 ]

* 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 [ 136812-31-2 ]

[ 136812-31-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 621-38-5 ]
  • [ 68-12-2 ]
  • [ 136812-31-2 ]
YieldReaction ConditionsOperation in experiment
To DMF (16 mL) was added POCl3 (48.8 mL, 523 mmol) dropwise via cannula over 30 minutes at 0 C, and the reaction mixture was stirred for another 30 minutes at this temperature. <strong>[621-38-5]N-(3-bromophenyl)acetamide</strong> (16 g, 75 mmol) was added to the mixture and the reaction was stirred at 80 C for 2 h. The mixture was concentrated under reduced pressure. The residue was diluted with saturated aqueous NaHCO3 (200 mL) and extracted with EtOAc (1000 mL). The organic phase was washed with water (600 mL) and brine (300 mL), and dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by column chromatography on silica (20% EtOAc/petroleum ether) to afford 7- bromo-2-chloroquinoline-3-carbaldehyde as a solid. Then, 7-bromo-2-chloroquinoline-3- carbaldehyde (1.8 g, 6.65 mmol) was co-evaporated with toluene (5 mL) three times. To a solution of 7-bromo-2-chloroquinoline-3-carbaldehyde (1.8 g, 6.65 mmol) in DCM (27 mL) was added DAST (1.76 mL, 13.3 mmol) at 0 C, and the mixture was stirred at 50 C for 1.5 h. The reaction was diluted with saturated aqueous NaHCO3 (50 mL) at 0 C and extracted with EtOAc (250 mL). The organic layer was washed with water (100 mL) and brine (100 mL), dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by column chromatography on silica (30% DCM/petroleum ether) to afford 7-bromo-2-chloro-3-(difluoromethyl)quinoline as a solid. MS: 291, 293 (M + 1).
With trichlorophosphate; at 0 - 80℃; for 2h; Step 1: To DMF (16 mL) was added POCI3 (48.8 mL. 523 mmol) dropwise via cannula over 30 minutes at 0 C. and the reaction mixture was stirred for another 30 minutes at this temperature. Then, N-(3-brornophenyi)acetamide (16 g, 75 minol) was added to the mixture and the reaction was stirred at 80 C for 2 It The solvent was then removed under reduced pressure to afford crude residue which was diluied with 200 mL of saturated aqueous NaHCO3 and extracted with1000 inL of EtOAc. The organic phase was washed with water (600 mL), brine (300 mL), dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (eluted with 20% EtOAc/PE) to afford 7-brorno-2.-chloroquinoline-3-carbaldehyde as a solid. Then, 7-bromo-2- cliloroquinoline-3-carbaldehyde (1.8 g, 6.65 mmol) was coevaporated with toluene (5 rnL) threetimes. To a. solution of 7-brorno-2-chloroquinohne-3-carbaldehvde (1.8 g, 6.65 mmol) in DCM(27 ni) was added DAST (1.76 mL, 13.31 mmol) at 0 C, and the nixiure was then stuffed at50 C for 1.5 h. The reaction was diluted with 50 rnL of saturated aqueous Nal-{C03 at 0 C andextracted with 250 rnL EtOAc. The organic phase was washed with water (100 mL), brine (100mL), dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated underreduced pressure. The resulting residue was purified by silica gel column chromatography(eluted with 30% DCM/PE) to afford 7-brorno-2-chloro-3-(difluorornethyl)quinoline as a solid.MS: 292/294 (M ± 1/M ± 3).
 

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