Sodium Iodide → 6-Bromo-4-(5-{[(3R,5S)-3,5-dimethyl-4-(1-methylethyl)-1-piperazinyl]methyl}-1,3,4-oxadiazol-2-yl)-1-(phenylsulfonyl)-1H-indazole

HRID 520538Notes

Reaction equation

[Br:1][C:2]1[CH:10]=[C:9]2[C:5]([CH:6]=[N:7][N:8]2[S:11]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)(=[O:13])=[O:12])=[C:4]([C:20]2[O:21][C:22]([CH2:25]Br)=[N:23][N:24]=2)[CH:3]=1.[CH3:27][C@@H:28]1[CH2:33][NH:32][CH2:31][C@H:30]([CH3:34])[N:29]1[CH:35]([CH3:37])[CH3:36].CCN(C(C)C)C(C)C.[I-].[Na+]>C(#N)C.C(Cl)Cl>[Br:1][C:2]1[CH:10]=[C:9]2[C:5]([CH:6]=[N:7][N:8]2[S:11]([C:14]2[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=2)(=[O:12])=[O:13])=[C:4]([C:20]2[O:21][C:22]([CH2:25][N:32]3[CH2:31][C@H:30]([CH3:34])[N:29]([CH:35]([CH3:37])[CH3:36])[C@H:28]([CH3:27])[CH2:33]3)=[N:23][N:24]=2)[CH:3]=1

Participants

Conditions

Temperature: 70 °C

Procedure

6-Bromo-4-[5-(bromomethyl)-1,3,4-oxadiazol-2-yl]-1-(phenylsulfonyl)-1H-indazole (200 mg, 0.441 mmol) in acetonitrile (2 ml) was treated with (2R,6S)-2,6-dimethyl-1-(1-methylethyl)piperazine (138 mg, 0.883 mmol, see J. Med. Chem., 1999, 42, 1123-1144 for literature preparation), DIPEA (0.154 ml, 0.8825 mmol) and sodium iodide (66 mg, 0.44 mmol). The reaction mixture was heated at 70° C. for 5 h. The reaction mixture was then cooled, diluted with DCM and washed with an aqueous 2M HCl solution (5 ml). The organic layer was separated using a hydrophobic frit, washed with water and the solvent removed under a stream of nitrogen to give the title compound as a brown oil.

Workup

temperatureThe reaction mixture was then cooled
washwashed with an aqueous 2M HCl solution (5 ml)
customThe organic layer was separated
washwashed with water
customthe solvent removed under a stream of nitrogen

Sources & evidence

ORD record: ord-7c99a30ae6604787b0a1d09b9ec70fb7
Source dataset: uspto-grants-2016_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09326987B2

Reaction notes

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