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Chemical Structure| 74209-37-3 Chemical Structure| 74209-37-3

Structure of 74209-37-3

Chemical Structure| 74209-37-3

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Product Details of [ 74209-37-3 ]

CAS No. :74209-37-3
Formula : C8H6BrN3O2
M.W : 256.06
SMILES Code : O=[N+](C1=CC=CC2=C1N(C)N=C2Br)[O-]
MDL No. :MFCD11977534

Safety of [ 74209-37-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P264-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P362-P403+P233-P501

Application In Synthesis of [ 74209-37-3 ]

* 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 [ 74209-37-3 ]

[ 74209-37-3 ] Synthesis Path-Downstream   1~2

  • 2
  • [ 74209-34-0 ]
  • [ 74-88-4 ]
  • [ 74209-39-5 ]
  • [ 74209-37-3 ]
YieldReaction ConditionsOperation in experiment
44%; 37% With sodium methylate; In methanol; for 48h;Reflux; In a round-bottomed flask equipped with reflux condenser, <strong>[74209-34-0]3-bromo-7-nitro-1H-indazole</strong> (5) (0.63 g, 2.6 mmol) was dissolvedin dry methanol (25 mL). Then, sodium methoxyde (0.18 g,3.3 mmol) and 0.55 g of methyl iodide (0.24 mL, 3.9 mmol) wereadded. The mixture was heated to reflux for 2 days and then thesolvent was removed under reduced pressure. Water (30 mL)was added and the residue was extracted with chloroform(3 x 45 mL). The organic layers were combined, dried (Na2SO4),and concentrated to afford a crude solid formed mainly by thetwo isomers. After silica gel chromatography with (hexane/ethylacetate 30:1), 1 was obtained first (0.24, 37%) and increasing to1:1 to afford 2 (0.29, 44%).
 

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