1-Hydroxybenzotriazole → N-methyl-5-nitro-1H-indazole-3-carboxamide

HRID 1038000Notes

Reaction equation

HRID 1038000 reaction equation
[N+:1]([C:4]1[CH:5]=[C:6]2[C:10](=[CH:11][CH:12]=1)[NH:9][N:8]=[C:7]2[C:13]([OH:15])=O)([O-:3])=[O:2].Cl.CN.C1C=CC2N(O)N=[N:25][C:23]=2C=1.CCN(C(C)C)C(C)C.Cl.CN(C)CCCN=C=NCC>CN1CCCC1=O.C(OCC)(=O)C>[CH3:23][NH:25][C:13]([C:7]1[C:6]2[C:10](=[CH:11][CH:12]=[C:4]([N+:1]([O-:3])=[O:2])[CH:5]=2)[NH:9][N:8]=1)=[O:15]

Participants

8

Reactant 5

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 6364545Methylamine hydrochlorideHCID 71446525-nitro-1H-indazole-3-carboxylic Acid

Product 1

HCID 45810073N-methyl-5-nitro-1H-indazole-3-carboxamideYield 63%

Reagents, catalysts & solvents 2

HCID 8857Ethyl AcetateSolventHCID 13387N-methyl-2-pyrrolidoneSolvent

Procedure

To a solution of compound 54 (100 mg, 0.483 mmol), methylamine hydrochloride (52.2 mg, 0.773 mmol), HOBt (130 mg, 0.966 mmol) and DIEA (0.34 mL, 1.95 mmol) in N-methylpyrrolidinone was added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (148 mg, 0.773 mmol). The reaction was stirred at room temperature for 2 hrs and diluted with 10 mL of ethyl acetate. The mixture was washed with water and a yellow solid precipitated. The precipitate was collected by filtration to give compound 55 (67 mg).

Workup

  1. washThe mixture was washed with water
  2. customa yellow solid precipitated
  3. filtrationThe precipitate was collected by filtration

Sources & evidence

ORD record
ord-9a82de54f3a544d799cc08ca0340dcfa
Source dataset
uspto-grants-2013_10
Patent number
US08546404B2

Reaction notes

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