Hydrogen Peroxide → N-(6-nitro-2,3-dihydro-1H-inden-5-yl)acetamide

HRID 1669051Notes

Reaction equation

HRID 1669051 reaction equation
OO.C(O[C:10]([C:12](F)(F)F)=[O:11])(C(F)(F)F)=O.N1(CCCNC2N=[N+:28]([O-:39])[C:29]3[CH:38]=[C:37]4[C:33]([CH2:34][CH2:35][CH2:36]4)=[CH:32][C:30]=3[N:31]=2)CCOCC1.C(O)(C(F)(F)F)=[O:41]>C(Cl)Cl.N>[N+:28]([C:29]1[CH:38]=[C:37]2[C:33]([CH2:34][CH2:35][CH2:36]2)=[CH:32][C:30]=1[NH:31][C:10](=[O:11])[CH3:12])([O-:39])=[O:41]

Participants

7

Reactant 4

HCID 784Hydrogen PeroxideHCID 6422Trifluoroacetic acidHCID 9845Trifluoroacetic anhydrideHCID 11951636N-[3-(4-Morpholinyl)propyl]-7,8-dihydro-6H-indeno[5,6-e][1,2,4]triazin-3-amine 1-Oxide

Product 1

HCID 10751392N-(6-nitro-2,3-dihydro-1H-inden-5-yl)acetamide

Reagents, catalysts & solvents 2

HCID 222AmmoniaSolventHCID 6344DichloromethaneSolvent2×

Conditions

Temperature
0 °C

Procedure

H2O2 (70%, 0.60 mL, ca. 11.9 mmol) was added dropwise to a stirred solution of TFAA (1.7 mL, 11.9 mmol) in DCM (15 mL) at 0° C. The solution was stirred at 0° C. for 5 min, warmed to 20° C. for 10 min, then cooled to 0° C. and added to a stirred solution of 1-oxide 60 (412 mg, 1.2 mmol) and TFA (0.46 mL, 6.0 mmol) in DCM (20 mL) at 0° C. The solution was stirred at 20° C. for 4 h, diluted with dilute aqueous NH3 solution (10 mL) and extracted with CHCl3 (4×50 mL). The combined 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 (i) starting material 60 (208 mg, 50%) and (ii) 1,4-dioxide 61 (122 mg, 30%) as a red solid: mp (MeOH) 158-160° C.; 1H NMR δ 8.37 (br s, 1H, NH), 8.11 (s, 1H, H-5), 8.09 (s, 1H, H-9), 3.80-3.84 (m, 4H, 2×CH2O), 3.64-3.69 (m, 2H, CH2N), 3.02-3.10 (m, 4H, H-6, H-8), 2.56 (dd, J=6.2, 6.1 Hz, 2H, CH2N), 2.48-2.52 (m, 4H, 2×CH2N), 2.15-2.22 (m, 2H, H-7), 1.85-1.91 (m, 2H, CH2); 13C NMR δ 155.5, 149.5, 145.6, 138.0, 129.6, 115.8, 111.6, 66.9 (2), 57.7, 53.8 (2), 41.6, 33.3, 32.3, 25.5, 24.5. Anal. calcd for C17H23N5O3.¼CH3OH: C, 58.6; H, 6.9; N, 19.8. Found: C, 58.4; H, 6.7; N, 19.9%.

Workup

  1. temperaturewarmed to 20° C. for 10 min
  2. temperaturecooled to 0° C.
  3. stirringThe solution was stirred at 20° C. for 4 h
  4. extractionextracted with CHCl3 (4×50 mL)
  5. customThe combined organic fraction was dried
  6. customthe solvent evaporated
  7. customThe residue was purified by chromatography
  8. washeluting with a gradient (0-10%) of MeOH/DCM

Sources & evidence

ORD record
ord-17f98d8b2b7b4decab87b65c740849bc
Source dataset
uspto-grants-2011_08
Patent number
US07989451B2

Reaction notes

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