Sodium hydride → HCID 22396610, compound

HRID 2307004Notes

Reaction equation

HRID 2307004 reaction equation
[H-].[Na+].[Cl:3][C:4]1[C:12]2[NH:11][C:10]3[CH2:13][CH2:14][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:16][CH2:17][C:9]=3[C:8]=2[CH:7]=[CH:6][C:5]=1[Cl:25].Br[CH2:27][CH2:28][O:29][C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1>CN(C=O)C>[Cl:3][C:4]1[C:12]2[N:11]([CH2:27][CH2:28][O:29][C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=3)[C:10]3[CH2:13][CH2:14][N:15]([C:18]([O:20][C:21]([CH3:22])([CH3:24])[CH3:23])=[O:19])[CH2:16][CH2:17][C:9]=3[C:8]=2[CH:7]=[CH:6][C:5]=1[Cl:25]

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 68526Benzene, (2-bromoethoxy)-HCID 22397004HCID 22397004, compound

Product 1

HCID 22396610HCID 22396610, compoundYield 55%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Sodium hydride (60% dispersion in mineral oil, 51 mg, 1.3 mmol) was added to a solution of tert-butyl 7,8-dichloro-1,4,5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylate (0.30 g, 0.84 mmol) in DMF (5 mL). After 30 min, β-bromophenetole was added (0.31 mL). The reaction was quenched with saturated aqueous NH4Cl after 18 h and extracted with EtOAc (3×15 mL). The combined organic extracts were washed with brine, dried over Na2SO4, decanted, and concentrated. The crude product was purified by column chromatography (Biotage, 40S) with heptane/EtOAc (17:3) to give 0.22 g (55%) of a white solid: mp 138.4-139.7° C.; 1H NMR (300 MHz, CDCl3) δ 6.92 (m, 1H), 6.79 (m, 2H), 4.90 (m, 2H), 4.27 (m, 2H), 3.80 (m, 2H), 3.66 (m, 2H), 3.17 (m, 2H), 2.93 (m, 2H), 1.49 (s, 9H); IR (diffuse reflectance) 2979, 1687, 1467, 1443, 1416, 1365, 1253, 1239, 1223, 1172, 1165, 1156, 923, 808, 760 cm−1; MS (EI) m/z 474 (M+), 420, 418, 332, 86, 84, 57, 56, 55, 51; Anal. Calcd for C25H28Cl2N2O3: C, 63.16; H, 5.94; N, 5.89; found: C, 63.15; H, 6.00; N, 5.89.

Workup

  1. customThe reaction was quenched with saturated aqueous NH4Cl after 18 h
  2. extractionextracted with EtOAc (3×15 mL)
  3. washThe combined organic extracts were washed with brine
  4. dry with materialdried over Na2SO4
  5. customdecanted
  6. concentrationconcentrated
  7. customThe crude product was purified by column chromatography (Biotage, 40S) with heptane/EtOAc (17:3)

Sources & evidence

ORD record
ord-5b2cf7e11e8240c2995f2787608ae2d0
Source dataset
uspto-grants-2004_12
Patent number
US06828314B2

Reaction notes

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