1-Hydroxybenzotriazole → HCID 66890455, compound

HRID 1667622Notes

Reaction equation

HRID 1667622 reaction equation
[C:1]([O:5][C:6]([NH:8][C@@H:9]([CH:13]1[CH2:18][CH2:17][CH2:16][CH2:15][CH2:14]1)[C:10]([OH:12])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].C1C=CC2N(O)N=NC=2C=1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[NH:53]1[CH2:57][CH2:56][CH2:55][C@H:54]1[C:58]1[CH:63]=[CH:62][N:61]=[C:60]([N:64]2[C:68]3[CH:69]=[CH:70][CH:71]=[CH:72][C:67]=3[N:66]=[CH:65]2)[CH:59]=1.C(N(C(C)C)CC)(C)C>CN(C=O)C.O>[C:1]([O:5][C:6](=[O:7])[NH:8][C@@H:9]([CH:13]1[CH2:18][CH2:17][CH2:16][CH2:15][CH2:14]1)[C:10]([N:53]1[CH2:57][CH2:56][CH2:55][C@H:54]1[C:58]1[CH:63]=[CH:62][N:61]=[C:60]([N:64]2[C:68]3[CH:69]=[CH:70][CH:71]=[CH:72][C:67]=3[N:66]=[CH:65]2)[CH:59]=1)=[O:12])([CH3:2])([CH3:3])[CH3:4]

Participants

8

Reactant 5

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 7004938N-(tert-Butoxycarbonyl)-L-cyclohexylglycineHCID 58111894HCID 58111894, compound

Product 1

HCID 66890455HCID 66890455, compoundYield 67%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent2×

Procedure

A solution of (S)-tert-butoxycarbonylamino-cyclohexyl-acetic acid (51 mg, 0.21 mmol), HOBt (31 mg, 0.23 mmol) and HBTU (88 mg, 0.23 mmol) in DMF (5 mL) is stirred at room temperature for 30 min. Then a solution of —((S)-4-pyrrolidin-2-yl-pyridine-2-yl)-1H-benzoimidazole (10) in DMF (5 mL) is added, followed by diisopropylethylamine (135 mg, 1.05 mmol). After stirring at room temperature for 2 h, the reaction mixture is diluted with water and extracted with EtOAc. The combined organic layers are washed with water, sat. NaHCO3, brine, dried over Na2SO4, filtered and concentrated down. The crude product is purified by flash chromatography on silica gel (EtOAc/Hexane: 5%˜40%) to give {(S)-2-[(S)-2-(2-benzoimidazol-1-yl-pyridin-4-yl)-pyrrolidin-1-yl]-1-cyclohexyl-2-oxo-ethyl}-carbamic acid tert-butyl ester (71 mg, 67%) as a white solid. M/Z=504.2 [M+1]

Workup

  1. extractionextracted with EtOAc
  2. washThe combined organic layers are washed with water, sat. NaHCO3, brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated down
  6. customThe crude product is purified by flash chromatography on silica gel (EtOAc/Hexane: 5%˜40%)

Sources & evidence

ORD record
ord-d436b5ad73b242298f569a2ae66a3f0d
Source dataset
uspto-grants-2011_10
Patent number
US08044209B2

Reaction notes

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