N,N-Dimethylethylenediamine → N1,N1-Dimethyl-N2-(1-oxido-7,8,9,10-tetrahydronaphtho[2,1-e][1,2,4]triazin-3-yl)-1,2-ethanediamine

HRID 1669129Notes

Reaction equation

HRID 1669129 reaction equation
[CH3:1][N:2]([CH3:6])[CH2:3][CH2:4][NH2:5].Cl[C:8]1[N:9]=[N+:10]([O-:22])[C:11]2[C:21]3[CH2:20][CH2:19][CH2:18][CH2:17][C:16]=3[CH:15]=[CH:14][C:12]=2[N:13]=1>COCCOC>[CH3:1][N:2]([CH3:6])[CH2:3][CH2:4][NH:5][C:8]1[N:9]=[N+:10]([O-:22])[C:11]2[C:21]3[CH2:20][CH2:19][CH2:18][CH2:17][C:16]=3[CH:15]=[CH:14][C:12]=2[N:13]=1

Participants

4

Reactant 2

HCID 66053N,N-DimethylethylenediamineHCID 251396223-Chloro-7,8,9,10-tetrahydronaphtho[2,1-e][1,2,4]triazine 1-Oxide

Product 1

HCID 25140752N1,N1-Dimethyl-N2-(1-oxido-7,8,9,10-tetrahydronaphtho[2,1-e][1,2,4]triazin-3-yl)-1,2-ethanediamineYield 84%

Reagents, catalysts & solvents 1

HCID 80711,2-DimethoxyethaneSolvent

Procedure

N,N-Dimethyl-1,2-ethanediamine (0.12 mL, 1.0 mmol) was added to a stirred solution of chloride 171 (83 mg, 0.4 mmol) in DME (20 mL) and the solution stirred at reflux temperature for 3 h. The solvent was evaporated and the residue partitioned between DCM (50 mL) and dilute aqueous NH3 solution (50 mL). The organic fraction was dried and the solvent evaporated. The residue was purified by chromatography, eluting with a gradient (0-10%) of MeOH/DCM, to give 1-oxide 172 (84 mg, 84%) as a yellow solid: mp (MeOH) 151-153° C.; 1H NMR δ 7.31-7.36 (m, 2H, H-5, H-6), 5.75 (br s, 1H, NH), 3.51-3.55 (m, 2H, CH2N), 3.45-3.49 (m, 2H, CH2), 2.72-2.83 (m, 2H, CH2), 2.57 (br dd, J=6.0, 5.8 Hz, 2H, CH2N), 2.29 [s, 6H, N(CH3)2], 1.75-1.82 (m, 4H, 2×CH2); 13C NMR δ 158.4, 149.8, 137.4, 134.7, 132.4, 129.1, 123.5, 57.7, 45.0 (2), 38.6, 30.7, 29.3, 23.1, 21.6. Anal. calcd for C15H21N5O.½CH3OH: C, 61.4; H, 7.6; N, 23.1. Found: C, 61.2; H, 7.4; N, 23.4%.

Workup

  1. temperatureat reflux temperature for 3 h
  2. customThe solvent was evaporated
  3. customthe residue partitioned between DCM (50 mL) and dilute aqueous NH3 solution (50 mL)
  4. customThe organic fraction was dried
  5. customthe solvent evaporated
  6. customThe residue was purified by chromatography
  7. washeluting with a gradient (0-10%) of MeOH/DCM

Sources & evidence

ORD record
ord-13751d43b0b7401c86b7d356dc18d37c
Source dataset
uspto-grants-2011_08
Patent number
US07989451B2

Reaction notes

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