Sodium triacetoxyborohydride → 2-(Methylamino)-4-(2-{4-[2-(1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperazin-1-yl}ethyl)benzonitrile

HRID 1519635Notes

Reaction equation

HRID 1519635 reaction equation
[CH3:1][NH:2][C:3]1[CH:10]=[C:9]([CH2:11][CH2:12][N:13]2[CH2:18][CH2:17][NH:16][CH2:15][CH2:14]2)[CH:8]=[CH:7][C:4]=1[C:5]#[N:6].[O:19]=[C:20]1[C:24]2[CH:25]=[CH:26][C:27]([CH2:29][CH:30]=O)=[CH:28][C:23]=2[CH2:22][O:21]1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C(Cl)Cl>[CH3:1][NH:2][C:3]1[CH:10]=[C:9]([CH2:11][CH2:12][N:13]2[CH2:14][CH2:15][N:16]([CH2:30][CH2:29][C:27]3[CH:26]=[CH:25][C:24]4[C:20](=[O:19])[O:21][CH2:22][C:23]=4[CH:28]=3)[CH2:17][CH2:18]2)[CH:8]=[CH:7][C:4]=1[C:5]#[N:6]

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 675133682-(Methylamino)-4-(2-piperazin-1-ylethyl)benzonitrileHCID 772312612-(1-Oxo-1,3-dihydroisobenzofuran-5-yl)acetaldehyde

Product 1

HCID 569708632-(Methylamino)-4-(2-{4-[2-(1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperazin-1-yl}ethyl)benzonitrile

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A solution of crude 2-(methylamino)-4-(2-piperazin-1-ylethyl)benzonitrile (˜18 mg, 0.05 mmol), (1-oxo-1,3-dihydro-2-benzofuran-5-yl)acetaldehyde (9 mg, 0.05 mmol) and NaBH(OAc)3 (100 mg, 0.47 mmol) in 10 mL of anhydrous DCM was stirred at ambient temperature overnight. The reaction mixture was added 50 mL of DCM and washed with brine. The organic layer was dried over anhydrous sodium sulfate and concentrated. The residue was purified with prep-TLC to afford 2-(methylamino)-4-(2-{4-[2-(1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperazin-1-yl}ethyl)benzonitrile. 1H-NMR (400 MHz, CDCl3) δ 7.77 (d, J=7.8, 1H), 7.22˜7.32 (m, 3H), 6.42˜6.47 (m, 2H), 5.22 (s, 2H), 4.50˜4.58 (m, 1H), 2.84˜2.91 (m, 7H), 2.72˜2.77 (m, 2H), 2.53˜2.67 (m, 10H). (0.43 μM)

Workup

  1. washwashed with brine
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. concentrationconcentrated
  4. customThe residue was purified with prep-TLC

Sources & evidence

ORD record
ord-3938c3003e1c420ab6bd635704b6ad8a
Source dataset
uspto-grants-2015_07
Patent number
US09073882B2

Reaction notes

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