Ethanol → 2-[4-(6-chloro-benzo[b]thiophene-2-sulfonyl)-2-oxo-piperazin-1-ylmethyl]-6,7-dihydro-5H-benzothiazol-4-one oxime

HRID 1433075Notes

Reaction equation

HRID 1433075 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[CH:9]=[C:8]([S:10]([N:13]3[CH2:18][CH2:17][N:16]([CH2:19][C:20]4[S:21][C:22]5[CH2:28][CH2:27][CH2:26][C:25](=O)[C:23]=5[N:24]=4)[C:15](=[O:30])[CH2:14]3)(=[O:12])=[O:11])[S:7][C:6]=2[CH:31]=1.Cl.[NH2:33][OH:34].C([O-])(=O)C.[Na+].CCO>C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[CH:9]=[C:8]([S:10]([N:13]3[CH2:18][CH2:17][N:16]([CH2:19][C:20]4[S:21][C:22]5[CH2:28][CH2:27][CH2:26][C:25](=[N:33][OH:34])[C:23]=5[N:24]=4)[C:15](=[O:30])[CH2:14]3)(=[O:12])=[O:11])[S:7][C:6]=2[CH:31]=1

Participants

6

Reactant 4

HCID 702EthanolHCID 443297Hydroxyamine hydrochlorideHCID 517045Sodium AcetateHCID 670150242-[4-(6-chloro-benzo[b]thiophene-2-sulfonyl)-2-oxo-piperazin-1-ylmethyl]-6,7-dihydro-5H-benzothiazol-4-one

Product 1

HCID 865925612-[4-(6-chloro-benzo[b]thiophene-2-sulfonyl)-2-oxo-piperazin-1-ylmethyl]-6,7-dihydro-5H-benzothiazol-4-one oxime

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

2-[4-(6-Chloro-benzo[b]thiophene-2-sulfonyl)-2-oxo-piperazin-1-ylmethyl]-6,7-dihydro-5H-benzothiazol-4-one (24 mg, 0.05 mmol), hydroxylamine hydrochloride (20 mg, 0.3 mmol), sodium acetate (20 mg, 0.3 mmol) and EtOH (2 mL) are combined and stirred 3.5 h. The reaction is diluted with CH2Cl2 and washed with NH4Cl, NaHCO3 and concentrated to provide 2-[4-(6-chloro-benzo[b]thiophene-2-sulfonyl)-2-oxo-piperazin-1-ylmethyl]-6,7-dihydro-5H-benzothiazol-4-one oxime. 1H NMR (300 MHz, DMSO-d6) δ 10.92 (s, 1H), 8.34 (d, 1H), 8.20 (s, 1H), 8.07 (d, 1H), 7.59 (dd, 1H), 4.70 (s, 2H), 3.87 (s, 2H), 3.49 (s, 4H), 2.74 (t, 2H), 2.61 (t, 2H), 1.81 (dt, 2H); (Ion Spray) 511 (M+H)+.

Workup

  1. washwashed with NH4Cl, NaHCO3
  2. concentrationconcentrated

Sources & evidence

ORD record
ord-73ef950b7d9a4b9da554785d5c8e2b5c
Source dataset
uspto-grants-2009_11
Patent number
US07612075B2

Reaction notes

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