Boron tribromide → HCID 53357108, compound

HRID 448172Notes

Reaction equation

HRID 448172 reaction equation
C[O:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7](=[O:25])[C:8]([C:15]3[CH:24]=[CH:23][C:18]([C:19]([O:21]C)=[O:20])=[CH:17][CH:16]=3)=[C:9]([S:13][CH3:14])[O:10]2)=[CH:5][CH:4]=1.B(Br)(Br)Br>ClCCl>[OH:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7](=[O:25])[C:8]([C:15]3[CH:24]=[CH:23][C:18]([C:19]([OH:21])=[O:20])=[CH:17][CH:16]=3)=[C:9]([S:13][CH3:14])[O:10]2)=[CH:5][CH:4]=1

Participants

4

Reactant 2

HCID 25134Boron tribromideHCID 67367114HCID 67367114, compound

Product 1

HCID 53357108HCID 53357108, compoundYield 25%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

Methyl 4-(7-methoxy-2-(methylthio)-4-oxo-4H-chromen-3-yl)benzoate (36 mg, 0.101 mmol) in dry dichloromethane (5.0 mL) was cooled to 0° C. under nitrogen and BBr3 in DCM (1.0 M, 0.2 mL, 0.202 mmol) was added rapidly. Then the mixture was stirred at room temperature overnight. The reaction was quenched with water and concentrated under reduced pressure. The residue was purified by prep-HPLC to afford Example 11 as an off-white solid (8.2 mg, 25%).

Workup

  1. customThe reaction was quenched with water
  2. concentrationconcentrated under reduced pressure
  3. customThe residue was purified by prep-HPLC

Sources & evidence

ORD record
ord-611421c34558441096e890102e9e0240
Source dataset
uspto-grants-2013_07
Patent number
US08481590B2

Reaction notes

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