3,3-Dimethylpiperidine → (S)-8-chloro-1-[5-(3,3-dimethyl-piperidin-1-yl)methyl-1,2,4-oxadiazol-3-yl]-12,12a-dihydro-9H,11H-azeto[2,1-c]imidazo[1,5-a][1,4]benzodiazepin-9-one

HRID 1378188Notes

Reaction equation

HRID 1378188 reaction equation
[Cl:1][C:2]1[C:7]2[C:8](=[O:25])[N:9]3[CH2:24][CH2:23][C@H:10]3[C:11]3[N:12]([CH:13]=[N:14][C:15]=3[C:16]3[N:20]=[C:19]([CH2:21]Cl)[O:18][N:17]=3)[C:6]=2[CH:5]=[CH:4][CH:3]=1.[CH3:26][C:27]1([CH3:33])[CH2:32][CH2:31][CH2:30][NH:29][CH2:28]1>CN(C)C=O>[Cl:1][C:2]1[C:7]2[C:8](=[O:25])[N:9]3[CH2:24][CH2:23][C@H:10]3[C:11]3[N:12]([CH:13]=[N:14][C:15]=3[C:16]3[N:20]=[C:19]([CH2:21][N:29]4[CH2:30][CH2:31][CH2:32][C:27]([CH3:33])([CH3:26])[CH2:28]4)[O:18][N:17]=3)[C:6]=2[CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 709423,3-DimethylpiperidineHCID 53954665(S)-8-chloro-1-(5-chloromethyl-1,2,4-oxadiazol-3-yl)-12,12a-dihydro-9H,11H-azeto[2,1-c]-imidazo[1,5-a][1,4]benzodiazepin-9-one

Product 1

HCID 54431367(S)-8-chloro-1-[5-(3,3-dimethyl-piperidin-1-yl)methyl-1,2,4-oxadiazol-3-yl]-12,12a-dihydro-9H,11H-azeto[2,1-c]imidazo[1,5-a][1,4]benzodiazepin-9-oneYield 98.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

1.13 g (3 mmol) of (S)-8-chloro-1-(5-chloromethyl-1,2,4-oxadiazol-3-yl)-12,12a-dihydro-9H,11H-azeto[2,1-c]imidazo[1,5-a][1,4]benzodiazepin-9-one were stirred at room temperature overnight with 2 g (17.7 mmol) of 3,3-dimethylpiperidine and 15 ml of N,N-dimethylformamide. By evaporation of the reaction mixture and chromatography of the residue on silica gel while eluting with ethyl acetate there were obtained 1.34 g (98%) of (S)-8-chloro-1-[5-(3,3-dimethyl-piperidin-1-yl)methyl-1,2,4-oxadiazol-3-yl]-12,12a-dihydro-9H,11H-azeto[2,1-c]imidazo[1,5-a][1,4]benzodiazepin-9-one, which was converted into the hydrochloride (amorphous).

Workup

  1. customBy evaporation of the reaction mixture and chromatography of the residue on silica gel
  2. washwhile eluting with ethyl acetate

Sources & evidence

ORD record
ord-19baa5a6ad6f484aa2ab141f3315522c
Source dataset
uspto-grants-1997_09
Patent number
US05665718

Reaction notes

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