Water → Bis{5-Amino-1-(2,6-dichloro-4-trifluoromethylphenyl)-3-(1,2,4-oxadiazol-3-yl)pyrazol-4-yl}disulfide

HRID 429251Notes

Reaction equation

[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([C:19]2[N:23]=[CH:22][O:21][N:20]=2)[C:3]=1[S:24]C#N.[BH4-].[Na+].[OH2:29]>CO>[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:16])([F:17])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([C:19]2[N:23]=[CH:22][O:29][N:20]=2)[C:3]=1[S:24][S:24][C:3]1[C:4]([C:19]2[N:23]=[CH:22][O:21][N:20]=2)=[N:5][N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:16])([F:15])[F:17])=[CH:9][C:8]=2[Cl:18])[C:2]=1[NH2:1]

Participants

Conditions

Temperature: 0 °C

Procedure

5-Amino-1-(2,6-dichloro-4-trifluoromethylphenyl)-3-(1,2,4-oxadiazol-3-yl)-4-thiocyanatopyrazole 1.00 g (2.37 mmol) was dissolved in 20 ml of dry methanol, and then 210 mg (5.00 mmol) of 90% sodium borohydride was added at 0° C. After the mixture was was stirred at 0° C. for 3.5 hrs, the reaction mixture was poured into 80 ml iced water, and then the precipitate was collected by filtration. After drying in vacuo, the resulting yellow crystal was recrystalized from ethyl acetate-n-hexane mixed solvent to obtain 512 mg (0.65 mmol) of the title compound as a yellow crystal. Yield 55%.

Workup

filtrationthe precipitate was collected by filtration
customAfter drying in vacuo
customthe resulting yellow crystal was recrystalized from ethyl acetate-n-hexane mixed solvent

Sources & evidence

ORD record: ord-2d6dc178cc0749db85c97e55976d0047
Source dataset: uspto-grants-2001_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06316477B1

Reaction notes

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