Acetic Acid → 7-[4-(2-butoxyethoxy)phenyl]-N-[4-[(S)-hydroxy-(1-oxidopyridin-1-ium-2-yl)methyl]phenyl]-1-[(1-methylpyrazol-4-yl)methyl]-2,3-dihydro-1-benzazepine-4-carboxamide

HRID 856428Notes

Reaction equation

HRID 856428 reaction equation
[CH2:1]([O:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]2[CH:16]=[CH:17][C:18]3[NH:24][CH2:23][CH2:22][C:21]([C:25]([NH:27][C:28]4[CH:33]=[CH:32][C:31]([C@H:34]([OH:42])[C:35]5[CH:40]=[CH:39][CH:38]=[CH:37][N+:36]=5[O-:41])=[CH:30][CH:29]=4)=[O:26])=[CH:20][C:19]=3[CH:43]=2)=[CH:11][CH:10]=1)[CH2:2][CH2:3][CH3:4].[CH:44]([C:46]1[CH:47]=[N:48][N:49]([CH3:51])[CH:50]=1)=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)C>ClCCCl.O>[CH2:1]([O:5][CH2:6][CH2:7][O:8][C:9]1[CH:10]=[CH:11][C:12]([C:15]2[CH:16]=[CH:17][C:18]3[N:24]([CH2:44][C:46]4[CH:47]=[N:48][N:49]([CH3:51])[CH:50]=4)[CH2:23][CH2:22][C:21]([C:25]([NH:27][C:28]4[CH:29]=[CH:30][C:31]([C@H:34]([OH:42])[C:35]5[CH:40]=[CH:39][CH:38]=[CH:37][N+:36]=5[O-:41])=[CH:32][CH:33]=4)=[O:26])=[CH:20][C:19]=3[CH:43]=2)=[CH:13][CH:14]=1)[CH2:2][CH2:3][CH3:4]

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 5731171-Methyl-1H-pyrazole-4-carbaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 695213867-[4-(2-butoxyethoxy)phenyl]-N-[4-[(S)-hydroxy(1-oxidopyridin-2-yl)methyl]phenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxamide

Product 1

HCID 30134177-[4-(2-butoxyethoxy)phenyl]-N-[4-[(S)-hydroxy-(1-oxidopyridin-1-ium-2-yl)methyl]phenyl]-1-[(1-methylpyrazol-4-yl)methyl]-2,3-dihydro-1-benzazepine-4-carboxamideYield 41.3%

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolventHCID 962WaterSolvent

Procedure

To a solution of 7-[4-(2-butoxyethoxy)phenyl]-N-[4-[(S)-hydroxy(1-oxidopyridin-2-yl)methyl]phenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxamide (200 mg) and 4-formyl-1-methylpyrazole (0.4 g) in 1,2-dichloroethane (10 ml) were added sodium triacetoxyborohydride (0.22 g) and acetic acid (1 droplet) at room temperature and the mixture was stirred for 5 days. To the reaction solution was added water and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over magnesium sulfate and concentrated under reduced pressure. The residue was purified by column chromatography (ethanol:ethyl acetate 1:3→1:2) and recrystallized from ethyl acetate-diisopropylether to give 7-[4-(2-butoxyethoxy)phenyl]-N-[4-[(S)-hydroxy(1-oxidopyridin-2-yl)methyl]phenyl]-1-(1-methylpyrazol-4-ylmethyl)-2,3-dihydro-1H-1-benzazepine-4-carboxamide (Compound 87) (96.1 mg) as yellow crystals.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by column chromatography (ethanol:ethyl acetate 1:3→1:2)
  6. customrecrystallized from ethyl acetate-diisopropylether

Sources & evidence

ORD record
ord-a2c87b0280c147ec85c40a35782f08a4
Source dataset
uspto-grants-2007_08
Patent number
US07262185B2

Reaction notes

Loading…