Sodium hydride → {3-[3-(2-cyano-benzyl)-5-methyl-4-oxo-4,5-dihydro-3H-1,3,5,6-tetraaza-cyclopenta[a]naphthalen-2-yl]-cyclohexyl}-carbamic acid benzyl ester

HRID 1376226Notes

Reaction equation

HRID 1376226 reaction equation
[CH2:1]([O:8][C:9](=[O:32])[NH:10][CH:11]1[CH2:16][CH2:15][CH2:14][CH:13]([C:17]2[NH:18][C:19]3[C:28](=[O:29])[N:27]([CH3:30])[C:26]4[C:21](=[CH:22][CH:23]=[CH:24][N:25]=4)[C:20]=3[N:31]=2)[CH2:12]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[Na+].[H][H].[C:37]([C:39]1[CH:46]=[CH:45][CH:44]=[CH:43][C:40]=1[CH2:41]Br)#[N:38]>CN(C=O)C>[CH2:1]([O:8][C:9](=[O:32])[NH:10][CH:11]1[CH2:16][CH2:15][CH2:14][CH:13]([C:17]2[N:18]([CH2:41][C:40]3[CH:43]=[CH:44][CH:45]=[CH:46][C:39]=3[C:37]#[N:38])[C:19]3[C:28](=[O:29])[N:27]([CH3:30])[C:26]4[C:21](=[CH:22][CH:23]=[CH:24][N:25]=4)[C:20]=3[N:31]=2)[CH2:12]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 24758Sodium hydrideHCID 895992-(Bromomethyl)benzonitrileHCID 58788434[3-(5-methyl-4-oxo-4,5-dihydro-3H-1,3,5,6-tetraaza-cyclopenta[a]naphthalen-2-yl)-cyclohexyl]-carbamic acid benzyl esterHCID 178418361HCID 178418361, compound

Product 1

HCID 16045626{3-[3-(2-cyano-benzyl)-5-methyl-4-oxo-4,5-dihydro-3H-1,3,5,6-tetraaza-cyclopenta[a]naphthalen-2-yl]-cyclohexyl}-carbamic acid benzyl esterYield 100.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of [3-(5-methyl-4-oxo-4,5-dihydro-3H-1,3,5,6-tetraaza-cyclopenta[a]naphthalen-2-yl)-cyclohexyl]-carbamic acid benzyl ester (45 mg, 0.10 mmol) in DMF (2 mL) was added NaH (5 mg, 0.12 mmol 60% in mineral oil) at 0° C. After hydrogen evolution had ceased, 2-cyanobenzylbromide (31 mg, 0.16 mmol) was added and the reaction was stirred at room temperature for 2 h. The flask was cooled with an ice-bath, and the reaction was quenched by addition of saturated aqueous NH4Cl. The mixture was extracted with CH2Cl2 and the organics were dried over MgSO4 and concentrated in vacuo. The crude product was purified by flash chromatography, eluting with 1% MeOH to give {3-[3-(2-cyano-benzyl)-5-methyl-4-oxo-4,5-dihydro-3H-1,3,5,6-tetraaza-cyclopenta[a]naphthalen-2-yl]-cyclohexyl}-carbamic acid benzyl ester (55 mg, 97% yield). 1H-NMR (CDCl3): δ 8.58 (m, 2H), 7.75 (m, 1H), 7.48 (m, 1H), 7.35 (m, 6H), 7.17 (d, 1H, J=7.6 Hz), 6.26 (m, 1H), 5.96 (m, 1H), 5.08 (s, 2H), 3.91 (s, 3H), 3.69 (m, 1H), 2.93 (m, 1H), 2.08 (m, 1H), 1.98 (m, 1H), 1.83 (m, 2H), 1.76 (m, 1H), 1.59 (m, 1H), 1.51 (m, 1H), 1.33 (m, 1H). MS: calculated for C32H30N6O3+H 547.3; found: 547.2.

Workup

  1. temperatureThe flask was cooled with an ice-bath
  2. customthe reaction was quenched by addition of saturated aqueous NH4Cl
  3. extractionThe mixture was extracted with CH2Cl2
  4. dry with materialthe organics were dried over MgSO4
  5. concentrationconcentrated in vacuo
  6. customThe crude product was purified by flash chromatography
  7. washeluting with 1% MeOH

Sources & evidence

ORD record
ord-742c3cc2ead348bfb128310573555710
Source dataset
uspto-grants-2007_01
Patent number
US07169926B1

Reaction notes

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