Hydrogen Peroxide → (R)-benzyl 1-(1-carbamoyl-7-(4-methylpiperazine-1-carbonyl)-9H-carbazol-4-yl)piperidin-3-ylcarbamate

HRID 661918Notes

Reaction equation

HRID 661918 reaction equation
[C:1]([C:3]1[C:15]2[NH:14][C:13]3[C:8](=[CH:9][CH:10]=[C:11]([C:16]([N:18]4[CH2:23][CH2:22][N:21]([CH3:24])[CH2:20][CH2:19]4)=[O:17])[CH:12]=3)[C:7]=2[C:6]([N:25]2[CH2:30][CH2:29][CH2:28][C@@H:27]([NH:31][C:32](=[O:41])[O:33][CH2:34][C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)[CH2:26]2)=[CH:5][CH:4]=1)#[N:2].[OH-:42].[K+].OO.O>CS(C)=O>[C:1]([C:3]1[C:15]2[NH:14][C:13]3[C:8](=[CH:9][CH:10]=[C:11]([C:16]([N:18]4[CH2:23][CH2:22][N:21]([CH3:24])[CH2:20][CH2:19]4)=[O:17])[CH:12]=3)[C:7]=2[C:6]([N:25]2[CH2:30][CH2:29][CH2:28][C@@H:27]([NH:31][C:32](=[O:41])[O:33][CH2:34][C:35]3[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=3)[CH2:26]2)=[CH:5][CH:4]=1)(=[O:42])[NH2:2]

Participants

6

Reactant 4

HCID 784Hydrogen PeroxideHCID 962WaterHCID 14797Potassium HydroxideHCID 86642947(R)-benzyl 1-(1-cyano-7-(4-methylpiperazine-1-carbonyl)-9H-carbazol-4-yl)piperidin-3-ylcarbamate

Product 1

HCID 46834656(R)-benzyl 1-(1-carbamoyl-7-(4-methylpiperazine-1-carbonyl)-9H-carbazol-4-yl)piperidin-3-ylcarbamateYield 80%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

Step 5 A solution of (R)-benzyl 1-(1-cyano-7-(4-methylpiperazine-1-carbonyl)-9H-carbazol-4-yl)piperidin-3-ylcarbamate (108 mg, 0.196 mmol) in DMSO (2 mL) was treated with 22% aqueous potassium hydroxide (0.208 mL, 0.981 mmol), and then dropwise with a solution of 30% aqueous hydrogen peroxide (0.200 mL, 1.961 mmol). The mixture was stirred at rt for 2.5 h. Water was added, the resulting suspension was stirred at rt for 15 min, and the solid was collected by filtration, washed with water and dried to afford (R)-benzyl 1-(1-carbamoyl-7-(4-methylpiperazine-1-carbonyl)-9H-carbazol-4-yl)piperidin-3-ylcarbamate as an off-white solid (89 mg, 80%). 1H NMR (400 MHz, methanol-d4) δ 8.17 (d, J=8.13 Hz, 1H) 7.81 (d, J=8.35 Hz, 1H) 7.66 (s, 1H) 7.30 (d, J=7.91 Hz, 1H) 7.09-7.26 (m, 5H) 6.82 (d, J=8.35 Hz, 1H) 4.90-5.03 (m, 2H) 3.87-3.99 (m, 1H) 3.57-3.68 (m, 1H) 3.27-3.54 (m, 5H) 3.06-3.19 (m, 4H) 2.69-2.82 (m, 1H) 2.47-2.65 (m, 1H) 1.98-2.11 (m, 1H) 1.83-1.97 (m, 2H) 1.32-1.53 (m, 1H). Mass spectrum m/z 569.3 (M+H)+.

Workup

  1. stirringthe resulting suspension was stirred at rt for 15 min
  2. filtrationthe solid was collected by filtration
  3. washwashed with water
  4. customdried

Sources & evidence

ORD record
ord-fba040c8aac5430d9bbe22aa18581fcf
Source dataset
uspto-grants-2011_12
Patent number
US08084620B2

Reaction notes

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