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Chemical Structure| 906000-49-5 Chemical Structure| 906000-49-5

Structure of 906000-49-5

Chemical Structure| 906000-49-5

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Product Details of [ 906000-49-5 ]

CAS No. :906000-49-5
Formula : C9H9N3O
M.W : 175.19
SMILES Code : O=C(C1=CC2=C(C=C1)C=NN2)NC
MDL No. :MFCD16619959

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Application In Synthesis of [ 906000-49-5 ]

* 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 [ 906000-49-5 ]

[ 906000-49-5 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 704-91-6 ]
  • [ 74-89-5 ]
  • [ 906000-49-5 ]
YieldReaction ConditionsOperation in experiment
99% With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine; In methanol; N,N-dimethyl-formamide; at 0 - 20℃; General procedure: A DMF solution of 3-(5-amino-1H-indazol-3-yl)benzenesulfonamide 2,2,2-trifluoroacetate (1.0equiv), DIPEA (N,N-diisopropylethylamine, 3equiv) and RCO2H (1.05equiv) at 0°C was treated with TBTU (O-(Benzotriazol-1-yl)-N,N,N?,N?-tetramethyluronium tetrafluoroborate) (1.05equiv) added in one portion. The reaction was stirred allowing slowly to warm to rt. After several hours or overnight stirring the crude reaction was purified directly by preparative HPLC. Alternatively, a DMF solution of 3-(3-sulfamoylphenyl)-1H-indazole-5-carboxylic acid (1.0equiv), DIPEA (3equiv) and RR?NH (1.05equiv) at 0°C or rt was treated with TBTU (1.05equiv) added in one portion. The reaction was stirred allowing slowly to warm to rt. After several hours or overnight stirring the crude reaction was purified directly by prepHPLC.
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine; In tetrahydrofuran; N,N-dimethyl-formamide; at 23℃; for 14h; A mixture of <strong>[704-91-6]1H-<strong>[704-91-6]indazole-6-carboxylic acid</strong></strong> (4-1, 1.11 g, 6.85 mmol, 1 equiv), N,N- diisopropylethylamine (2.65 g, 20.5 mmol, 3.00 equiv), (1H-l,2,3-benzotriazol-1-yloxy)(tripyrrolidin-1- yl)rhohosphonium hexafluorophosphate (Pybop, 5.34 g, 10.3 mmol, 1.50 equiv) and methylamine (10.3 mL (2M in THF), 20.5 mmol, 3 .00 equiv) in DMF (10 mL) was stirred at 23 °C for 14 h. The reaction mixture was partitioned between a 1: 1 aqueous mixture of of sodium chloride solution and sodium bicarbonate solution and ethyl acetate (2 x 50 mL). The aqueous layer was then acidified to pH 5 and washed with ethyl acetate (2 x 50 mL). The combined organic layers were dried over sodium sulfate and concentrated. The residue was purified by flash column chromatography (hexanes initially, grading to EPO <DP n="64"/>100percent EtOAc, then 10percent MeOH in EtOAc) to give N-methyl-1H-indazole-6-carboxamide (4-2) as a light brown solid. LRMS m/z (M+H) 176.2 found, 176.1 required.
 

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