Hydrochloric Acid → HCID 66608432, compound

HRID 550031Notes

Reaction equation

HRID 550031 reaction equation
[Br:1][C:2]1[CH:3]=[CH:4][C:5]([Cl:19])=[C:6]([CH2:8][C:9]2[S:13][C:12]3[CH:14]=[C:15]([OH:18])[CH:16]=[CH:17][C:11]=3[CH:10]=2)[CH:7]=1.Cl[C:21]([F:27])([F:26])C(OC)=O.C(=O)([O-])[O-].[K+].[K+].Cl>CN(C)C=O>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([Cl:19])=[C:6]([CH2:8][C:9]2[S:13][C:12]3[CH:14]=[C:15]([O:18][CH:21]([F:27])[F:26])[CH:16]=[CH:17][C:11]=3[CH:10]=2)[CH:7]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 11430Potassium CarbonateHCID 73935Methyl chlorodifluoroacetateHCID 66607121HCID 66607121, compound

Product 1

HCID 66608432HCID 66608432, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

5-Bromo-2-chloro-1-(6-hydroxybenzo[b]thiophen-2-ylmethyl)-benzene (1.8 g) obtained in Reference Example 132-(1) was dissolved in dimethylformamide (15 ml), and added thereto were methyl 2-chloro-2,2-difluoroacetate (1.63 ml) and potassium carbonate (2.28 g), and the mixture was stirred at 100° C. for 1.5 hours under argon atmosphere. The reaction mixture was acidified with 2N aqueous HCl solution and extracted with ethyl acetate. The organic layer was washed with brine and dried over magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (hexane) to give 5-bromo-2-chloro-1-(6-difluoromethoxybenzo[b]thiophen-2-yl-methyl)benzene (695 mg) as a colorless solid. GC-Mass m/Z 402/404 (M+).

Workup

  1. additionadded
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. customthe residue was purified by silica gel column chromatography (hexane)

Sources & evidence

ORD record
ord-c4876e032e6843039c0183caaf1f0339
Source dataset
uspto-grants-2011_05
Patent number
US07943788B2

Reaction notes

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