Dichloromethane → HCID 57941501, compound

HRID 1438017Notes

Reaction equation

HRID 1438017 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[N:9]1[C:17](=[O:18])[C:16]2[C@@H:15]3[C:19]([CH3:21])([CH3:20])[C@@:12]([CH3:22])([CH2:13][CH2:14]3)[C:11]=2[NH:10]1.[F:23][C:24]([F:34])([F:33])[C:25]1[CH:32]=[CH:31][CH:30]=[CH:29][C:26]=1[CH2:27]Br.ClCCl>[I-].C([N+](CCCC)(CCCC)CCCC)CCC.CN(C)C=O>[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[N:9]1[C:17](=[O:18])[C:16]2[C@@H:15]3[C:19]([CH3:21])([CH3:20])[C@@:12]([CH3:22])([CH2:13][CH2:14]3)[C:11]=2[N:10]1[CH2:27][C:26]1[CH:29]=[CH:30][CH:31]=[CH:32][C:25]=1[C:24]([F:23])([F:33])[F:34]

Participants

6

Reactant 3

HCID 6344DichloromethaneHCID 1230571-(Bromomethyl)-2-(trifluoromethyl)benzeneHCID 57941339(4s,7r)-2-(2,4-Difluoro-phenyl)-7,8,8-trimethyl-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one2×

Product 1

HCID 57941501HCID 57941501, compoundYield 34.1%

Reagents, catalysts & solvents 2

HCID 67553Tetrabutylammonium IodideCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of (4S,7R)-2-(2,4-difluoro-phenyl)-7,8,8-trimethyl-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one (Intermediate 14; 100 mg, 0.33 mmol), tetrabutylammonium iodide (120 mg, 0.32 mmol) and 2-(trifluoromethyl)benzyl bromide (200 μL, 1.3 mmol) in dimethylformamide (2 mL) was heated at 100° C. overnight. Dichloromethane (50 mL) was added and the solution was washed with 1:1 water/brine (20 mL), aqueous sodium thiosulfate, water, and brine. The solution was dried (magnesium sulfate), filtered, evaporated, and purified by column chromatography, eluting with 50-70% ethyl acetate/petroleum ether, to give (4S,7R)-2-(2,4-difluoro-phenyl)-7,8,8-trimethyl-1-(2-trifluoromethyl-benzyl)-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one (52 mg, 34%) as a white solid. APCI(+)-MS (M+H) 463.

Workup

  1. washthe solution was washed with 1:1 water/brine (20 mL), aqueous sodium thiosulfate, water, and brine
  2. dry with materialThe solution was dried (magnesium sulfate)
  3. filtrationfiltered
  4. customevaporated
  5. custompurified by column chromatography
  6. washeluting with 50-70% ethyl acetate/petroleum ether

Sources & evidence

ORD record
ord-b350f0e27cc742009a391655a5e8d9ac
Source dataset
uspto-grants-2009_11
Patent number
US07622492B2

Reaction notes

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