Dimethylformamide → 2-nitro-N-(2-pyridin-3-ylethyl)-N-[3-(1,3,3,5-tetramethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-7-yloxy)propyl]benzenesulfonamide

HRID 1183092Notes

Reaction equation

HRID 1183092 reaction equation
[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[S:10]([NH:13][CH2:14][CH2:15][C:16]1[CH:17]=[N:18][CH:19]=[CH:20][CH:21]=1)(=[O:12])=[O:11])([O-:3])=[O:2].C(=O)([O-])[O-].[K+].[K+].CN(C=O)C.I[CH2:34][CH2:35][CH2:36][O:37][C:38]1[CH:54]=[CH:53][C:41]2[N:42]([CH3:52])[C:43](=[O:51])[C:44]([CH3:50])([CH3:49])[C:45](=[O:48])[N:46]([CH3:47])[C:40]=2[CH:39]=1>C(OCC)(=O)C>[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[S:10]([N:13]([CH2:14][CH2:15][C:16]1[CH:17]=[N:18][CH:19]=[CH:20][CH:21]=1)[CH2:34][CH2:35][CH2:36][O:37][C:38]1[CH:54]=[CH:53][C:41]2[N:42]([CH3:52])[C:43](=[O:51])[C:44]([CH3:49])([CH3:50])[C:45](=[O:48])[N:46]([CH3:47])[C:40]=2[CH:39]=1)(=[O:11])=[O:12])([O-:3])=[O:2]

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 465565342-nitro-N-(2-pyridin-3-ylethyl)benzenesulfonamideHCID 686737507-(3-Iodopropoxy)-1,3,3,5-tetramethyl-1,5-dihydrobenzo[b][1,4]diazepine-2,4-dione

Product 1

HCID 686742442-nitro-N-(2-pyridin-3-ylethyl)-N-[3-(1,3,3,5-tetramethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-7-yloxy)propyl]benzenesulfonamideYield 80.1%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

2-Nitro-N-(2-pyridin-3-ylethyl)benzenesulfonamide (1.8 g, 5.8 mmol) and potassium carbonate (1.0 g, 7.2 mmol) were added to a DMF solution (30 ml) of 7-(3-iodopropoxy)-1,3,3,5-tetramethyl-1,5-dihydrobenzo[b][1,4]diazepine-2,4-dione (2.0 g, 4.8 mmol) and stirred at room temperature overnight. The reaction mixture was added to ice water, and extraction with ethyl acetate was performed. The organic layer was washed with water, dried over anhydrous sodium sulfate, concentrated under reduced pressure. The residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:2→ethyl acetate→ethyl acetate:methanol=20:1). The purified product was concentrated to dryness under reduced pressure to thereby obtain 2.29 g (yield: 80%) of 2-nitro-N-(2-pyridin-3-ylethyl)-N-[3-(1,3,3,5-tetramethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-7-yloxy)propyl]benzenesulfonamide as a yellow amorphous solid.

Workup

  1. washThe organic layer was washed with water
  2. dry with materialdried over anhydrous sodium sulfate
  3. concentrationconcentrated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:2→ethyl acetate→ethyl acetate:methanol=20:1)
  5. concentrationThe purified product was concentrated to dryness under reduced pressure

Sources & evidence

ORD record
ord-269915d84dcd46d6b975084a133f3113
Source dataset
uspto-grants-2014_03
Patent number
US08664217B2

Reaction notes

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