4-{(5,6,7,8-Tetrahydro-quinolin-8-yl)-[1-(2-trimethylsilanyl-ethoxymethyl)-1h-benzoimidazol-2-ylmethyl]-amino}-butyronitrile → N1-(1-(2-(trimethylsilyl)ethoxymethyl)-1H-Benzimidazol-2-ylmethyl)-N1-(5,6,7,8-tetrahydro-quinolin-8-yl)-butane-1,4-diamine

HRID 899582Notes

Reaction equation

HRID 899582 reaction equation
[N:1]1[C:10]2[CH:9]([N:11]([CH2:17][C:18]3[N:22]([CH2:23][O:24][CH2:25][CH2:26][Si:27]([CH3:30])([CH3:29])[CH3:28])[C:21]4[CH:31]=[CH:32][CH:33]=[CH:34][C:20]=4[N:19]=3)[CH2:12][CH2:13][CH2:14][C:15]#[N:16])[CH2:8][CH2:7][CH2:6][C:5]=2[CH:4]=[CH:3][CH:2]=1>N.[Ni].CO>[N:1]1[C:10]2[CH:9]([N:11]([CH2:17][C:18]3[N:22]([CH2:23][O:24][CH2:25][CH2:26][Si:27]([CH3:29])([CH3:28])[CH3:30])[C:21]4[CH:31]=[CH:32][CH:33]=[CH:34][C:20]=4[N:19]=3)[CH2:12][CH2:13][CH2:14][CH2:15][NH2:16])[CH2:8][CH2:7][CH2:6][C:5]=2[CH:4]=[CH:3][CH:2]=1

Participants

5

Reactant 1

HCID 691784354-{(5,6,7,8-Tetrahydro-quinolin-8-yl)-[1-(2-trimethylsilanyl-ethoxymethyl)-1h-benzoimidazol-2-ylmethyl]-amino}-butyronitrile

Product 1

HCID 59694106N1-(1-(2-(trimethylsilyl)ethoxymethyl)-1H-Benzimidazol-2-ylmethyl)-N1-(5,6,7,8-tetrahydro-quinolin-8-yl)-butane-1,4-diamineYield 66.7%

Reagents, catalysts & solvents 3

HCID 935NickelCatalystHCID 222AmmoniaSolventHCID 887MethanolSolvent

Procedure

4-{(5,6,7,8-Tetrahydro-quinolin-8-yl)-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzoimidazol-2-ylmethyl]-amino}-butyronitrile (840 mg, 1.75 mmol) was dissolved in NH3 saturated MeOH (15 mL), treated with Raney nickel (excess), and placed under 45 psi H2 on a Parr shaker for 16 hours. The mixture was diluted with MeOH and filtered through Celite. The cake was washed with MeOH and the combined filtrate was concentrated under reduced pressure. Purification by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 50:2:1) afforded the desired amine (560 mg, 66%) as an orange syrup. 1H NMR (CDCl3) δ −0.10 (s, 9H), 0.81 (t, 2H, J=9.0 Hz), 1.43-1.50 (m, 4H), 1.59-1.76 (m, 1H), 1.86-2.09 (m, 2H), 2.08-2.23 (m, 1H), 2.56-2.71 (m, 4H), 2.76-2.85 (m, 2H), 2.41 (t, 2H, J=8.1 Hz), 4.07-4.12 (m, 3H), 5.71 (d, 1H, J=11.1 Hz), 7.37 (d, 1H, J=11.1 Hz), 7.05 (dd, 1H, J=7.5, 4.5 Hz), 7.21-7.29 (m, 2H), 7.34 (d, 1H, J=6.6 Hz), 7.40-7.45 (m, 1H), 7.71-7.76 (m, 1H), 8.58 (d, 1H, J=3.6 Hz).

Workup

  1. filtrationfiltered through Celite
  2. washThe cake was washed with MeOH
  3. concentrationthe combined filtrate was concentrated under reduced pressure
  4. customPurification by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 50:2:1)

Sources & evidence

ORD record
ord-6793d38f9e03408aa45f28cd06fda77b
Source dataset
uspto-grants-2008_04
Patent number
US07354932B2

Reaction notes

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