Diisopropylethylamine → (S)-3-(4-Cyanophenyl)-2-{(1-(1-cyclohexyl-2-furan-3-yl-1H-benzoimidazol-5-yl)-methanoyl]-amino}-propionic acid ethyl ester

HRID 1280069Notes

Reaction equation

HRID 1280069 reaction equation
[CH:1]1([N:7]2[C:11]3[CH:12]=[CH:13][C:14]([C:16](O)=[O:17])=[CH:15][C:10]=3[N:9]=[C:8]2[C:19]2[CH:23]=[CH:22][O:21][CH:20]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.CCN(C(C)C)C(C)C.Cl.[CH2:56]([O:58][C:59](=[O:71])[C@H:60]([CH2:62][C:63]1[CH:68]=[CH:67][C:66]([C:69]#[N:70])=[CH:65][CH:64]=1)[NH2:61])[CH3:57]>CS(C)=O>[CH2:56]([O:58][C:59](=[O:71])[C@@H:60]([NH:61][C:16]([C:14]1[CH:13]=[CH:12][C:11]2[N:7]([CH:1]3[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]3)[C:8]([C:19]3[CH:23]=[CH:22][O:21][CH:20]=3)=[N:9][C:10]=2[CH:15]=1)=[O:17])[CH2:62][C:63]1[CH:68]=[CH:67][C:66]([C:69]#[N:70])=[CH:65][CH:64]=1)[CH3:57]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 4911131-Cyclohexyl-2-(furan-3-yl)-1H-benzimidazole-5-carboxylic acidHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 69316049(s)-4-Cyanophenylalanine ethyl ester hydrochloride

Product 1

HCID 59909984(S)-3-(4-Cyanophenyl)-2-{(1-(1-cyclohexyl-2-furan-3-yl-1H-benzoimidazol-5-yl)-methanoyl]-amino}-propionic acid ethyl esterYield 79.3%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

The carboxylic acid of example 2 (0.060 g, 0.20 mmol) and TBTU (1.3 equiv., 0.26 mmol, 0.084 g) were dissolved in DMSO (0.6 mL) and DIEA (5 equiv., 1.0 mmol, 0.18 mL) was added followed by (S)-4-cyanophenylalanine ethyl ester hydrochloride (1.3 equiv., 0.26 mmol, 0.065 g). The mixture was stirred at room temperature for 1 h and quenched with water. The precipitated solid was collected by filtration, washed with water and dried. The title amide (0.081 g) was obtained as a beige solid.

Workup

  1. customquenched with water
  2. filtrationThe precipitated solid was collected by filtration
  3. washwashed with water
  4. customdried

Sources & evidence

ORD record
ord-4b9b944833ea44fc886d254935741781
Source dataset
uspto-grants-2002_09
Patent number
US06448281B1

Reaction notes

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