Propylamine → (S)-8-chloro-1-(5-propylaminomethyl-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 1378184Notes

Reaction equation

HRID 1378184 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.[CH2:26]([NH2:29])[CH2:27][CH3:28]>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][NH:29][CH2:26][CH2:27][CH3:28])[O:18][N:17]=3)[C:6]=2[CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 7852PropylamineHCID 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 53715259(S)-8-chloro-1-(5-propylaminomethyl-1,2,4-oxadiazol-3-yl)-12,12a-dihydro-9H,11H-azeto[2,1-c]imidazo[1,5-a][1,4]benzodiazepin-9-oneYield 92.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

0.94 g (2.5 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 was stirred at room temperature overnight with 1 g (17 mmol) of propylamine 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/methanol 9/1 there was obtained 0.92 g (92%) of (S)-8-chloro-1-(5-propylaminomethyl-1,2,4-oxadiazol-3-yl)-12,12a-dihydro-9H,11H-azeto[2,1-c]imidazo[1,5-a][1,4]benzodiazepin-9-one of m.p. 237°-239°, which was converted into the hydrochloride.

Workup

  1. customBy evaporation of the reaction mixture and chromatography of the residue on silica gel
  2. washwhile eluting with ethyl acetate/methanol 9/1 there

Sources & evidence

ORD record
ord-b1a0b6c5b484486c9d459821d9eaf3a9
Source dataset
uspto-grants-1997_09
Patent number
US05665718

Reaction notes

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