Acetic Acid → 1-Ethyl-3,3,5-trimethyl-7-[4-(2-oxo-3,4-dihydro-2H-quinolin-1-yl)piperidin-1-ylmethyl]-1,5-dihydrobenzo[b][1,4]diazepine-2,4-dione

HRID 68975Notes

Reaction equation

HRID 68975 reaction equation
[CH2:1]([N:3]1[C:9](=[O:10])[C:8]([CH3:12])([CH3:11])[C:7](=[O:13])[N:6]([CH3:14])[C:5]2[CH:15]=[C:16]([CH:19]=O)[CH:17]=[CH:18][C:4]1=2)[CH3:2].C(O)(=O)C.[NH:25]1[CH2:30][CH2:29][CH:28]([N:31]2[C:40]3[C:35](=[CH:36][CH:37]=[CH:38][CH:39]=3)[CH2:34][CH2:33][C:32]2=[O:41])[CH2:27][CH2:26]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[CH2:1]([N:3]1[C:9](=[O:10])[C:8]([CH3:11])([CH3:12])[C:7](=[O:13])[N:6]([CH3:14])[C:5]2[CH:15]=[C:16]([CH2:19][N:25]3[CH2:30][CH2:29][CH:28]([N:31]4[C:40]5[C:35](=[CH:36][CH:37]=[CH:38][CH:39]=5)[CH2:34][CH2:33][C:32]4=[O:41])[CH2:27][CH2:26]3)[CH:17]=[CH:18][C:4]1=2)[CH3:2]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 5049666Sodium triacetoxyborohydrideHCID 107281851-(piperidin-4-yl)-3,4-dihydroquinolin-2(1H)-oneHCID 866704761-ethyl-3,3,5-trimethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-carbaldehyde

Product 1

HCID 706567341-Ethyl-3,3,5-trimethyl-7-[4-(2-oxo-3,4-dihydro-2H-quinolin-1-yl)piperidin-1-ylmethyl]-1,5-dihydrobenzo[b][1,4]diazepine-2,4-dioneYield 56.8%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

1-Ethyl-3,3,5-trimethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-carbaldehyde (0.203 g) and acetic acid (0.063 ml) were added to a 1,2-dichloroethane solution (5 ml) of 1-(piperidin-4-yl)-3,4-dihydroquinolin-2(1H)-one (0.170 g), and the mixture was stirred at room temperature for 30 minutes. Sodium triacetoxyborohydride (0.235 g) was added, and the mixture was stirred at room temperature overnight. The reaction mixture was condensed under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:methanol=100:0→90:10). The purified product was condensed to dryness to give the title compound (0.205 g) as pale yellow amorphous.

Workup

  1. stirringthe mixture was stirred at room temperature overnight
  2. customcondensed under reduced pressure
  3. customThe residue was purified by silica gel column chromatography (ethyl acetate:methanol=100:0→90:10)
  4. customcondensed to dryness

Sources & evidence

ORD record
ord-102d461414c84ab88a255b284d6fe177
Source dataset
uspto-grants-2014_09
Patent number
US08822453B2

Reaction notes

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