Acetonitrile → 5-cyclopropyl-4-iodo-1-phenyl-1H-pyrazole

HRID 1253483Notes

Reaction equation

[CH:1]1([C:4]2[N:8]([C:9]3[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=3)[N:7]=[CH:6][CH:5]=2)[CH2:3][CH2:2]1.[I:15]N1C(=O)CCC1=O.C(#N)C>C(OCC)(=O)C>[CH:1]1([C:4]2[N:8]([C:9]3[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=3)[N:7]=[CH:6][C:5]=2[I:15])[CH2:3][CH2:2]1

Participants

Conditions

Temperature: 70 °C

Procedure

5-cyclopropyl-1-phenyl-1H-pyrazole (200 mg, 1.09 mmol) and N-iodosuccinimide (366 mg, 1.63 mmol) were added to acetonitrile (5 ml). The reaction mixture was heated to 70° C. After 6 hours, the reaction mixture was diluted with ethyl acetate, washed with 1N aqueous sodium hydroxide and brine, then dried over magnesium sulfate, filtered, and concentrated. The residue was purified by column chromatography on silica gel (ethyl acetate/hexanes gradient) to afford 5-cyclopropyl-4-iodo-1-phenyl-1H-pyrazole.

Workup

washwashed with 1N aqueous sodium hydroxide and brine
dry with materialdried over magnesium sulfate
filtrationfiltered
concentrationconcentrated
customThe residue was purified by column chromatography on silica gel (ethyl acetate/hexanes gradient)

Sources & evidence

ORD record: ord-3c4a40280afd47c588d4e7037fe3d4d9
Source dataset: uspto-grants-2013_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08455477B2

Reaction notes

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