Triethylamine → N-[(3R,6S)-6-(2,3-difluorophenyl)-1-(2-hydroxy-2-methylpropyl)-2-oxoazepan-3-yl]-4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine-1-carboxamide

HRID 501158Notes

Reaction equation

HRID 501158 reaction equation
C(N(CC)CC)C.[NH2:8][C@@H:9]1[CH2:15][CH2:14][C@@H:13]([C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([F:22])[C:17]=2[F:23])[CH2:12][N:11]([CH2:24][C:25]([OH:28])([CH3:27])[CH3:26])[C:10]1=[O:29].Cl[C:31](OC1C=CC([N+]([O-])=O)=CC=1)=[O:32].Cl.Cl.[O:45]=[C:46]1[NH:54][C:49]2=[N:50][CH:51]=[CH:52][CH:53]=[C:48]2[N:47]1[CH:55]1[CH2:60][CH2:59][NH:58][CH2:57][CH2:56]1>O1CCCC1.C(Cl)(Cl)Cl>[F:23][C:17]1[C:18]([F:22])=[CH:19][CH:20]=[CH:21][C:16]=1[C@H:13]1[CH2:12][N:11]([CH2:24][C:25]([OH:28])([CH3:26])[CH3:27])[C:10](=[O:29])[C@H:9]([NH:8][C:31]([N:58]2[CH2:59][CH2:60][CH:55]([N:47]3[C:48]4[C:49](=[N:50][CH:51]=[CH:52][CH:53]=4)[NH:54][C:46]3=[O:45])[CH2:56][CH2:57]2)=[O:32])[CH2:15][CH2:14]1

Participants

7

Reactant 4

HCID 8471Triethylamine2×HCID 821294-Nitrophenyl chloroformateHCID 222931811-(piperidin-4-yl)-1H,2H,3H-imidazo[4,5-b]pyridin-2-one dihydrochlorideHCID 60037871(3R,6S)-3-Amino-6-(2,3-difluorophenyl)-1-(2-hydroxy-2-methylpropyl)azepan-2-one

Product 1

HCID 11261443N-[(3R,6S)-6-(2,3-difluorophenyl)-1-(2-hydroxy-2-methylpropyl)-2-oxoazepan-3-yl]-4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine-1-carboxamideYield 72.7%

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 8028TetrahydrofuranSolvent

Procedure

Triethylamine (0.054 mL, 0.389 mmol) was added to a solution of (3R,6S)-3-amino-6-(2,3-difluorophenyl)-1-(2-hydroxy-2-methylpropyl)azepan-2-one (54 mg, 0.173 mmol) and 4-nitrophenyl chloroformate (40 mg, 0.199 mmol) in tetrahydrofuran (15 mL) at 0° C. After 30 min, 2-oxo-1-(4-piperidinyl)-2,3-dihydro-1H-imidazo[4,5-b]pyridine dihydrochloride (151 mg, 0.519 mmol), triethylamine (1.04 mmol) and chloroform (15 mL) were added and the mixture allowed to warm to ambient temperature. The reaction was then heated to 50° C. for 2 h, concentrated, diluted with saturated aqueous sodium bicarbonate and extracted with dichloromethane (2×). The organic layer was washed with water, saturated brine, dried over magnesium sulfate, filtered and concentrated. Purification by silica gel chromatography (1.5%→11% methanol/dichloromethane) gave the title compound (70 mg). MS 557.2653 (M+1). 1H NMR (500 MHz, CDCl3) δ 8.03 (d, J=4.8 Hz, 1H), 7.34 (d, J=7.7 Hz, 1H), 7.1 (m, 2H), 7.0-6.9 (m, 2H), 6.17 (d, J=5.1 Hz, 1H), 4.84 (dd, J=10.9, 5.0 Hz, 1H), 4.5 (m, 1H), 4.3 (br dd, 2H), 4.02 (dd, J=10.1, 15.1 Hz, 1H), 3.76 (d, J=14.1 Hz, 1H), 3.42 (d, J=15.1 Hz, 1H), 3.31 (d, J=14.1 Hz, 1H), 3.15-2.95 (m, 4H), 2.3-1.9 (m, 8H), 1.26 (s, 3H), 1.24 (s, 3H).

Workup

  1. temperatureThe reaction was then heated to 50° C. for 2 h
  2. concentrationconcentrated
  3. additiondiluted with saturated aqueous sodium bicarbonate
  4. extractionextracted with dichloromethane (2×)
  5. washThe organic layer was washed with water, saturated brine
  6. dry with materialdried over magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customPurification by silica gel chromatography (1.5%→11% methanol/dichloromethane)

Sources & evidence

ORD record
ord-4fcad64d39514b9baf6f3a1631baa216
Source dataset
uspto-grants-2010_08
Patent number
US07772224B2

Reaction notes

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