Water → 3-(4-chloro-6-fluoro-2-hydroxy-3-iodophenyl)-1-methyl-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedione

HRID 1421467Notes

Reaction equation

HRID 1421467 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([F:8])[C:5]([N:9]2[C:14](=[O:15])[CH:13]=[C:12]([C:16]([F:19])([F:18])[F:17])[N:11]([CH3:20])[C:10]2=[O:21])=[C:4]([O:22]C)[C:3]=1[I:24].B(Br)(Br)Br.O>C(Cl)Cl>[Cl:1][C:2]1[CH:7]=[C:6]([F:8])[C:5]([N:9]2[C:14](=[O:15])[CH:13]=[C:12]([C:16]([F:18])([F:17])[F:19])[N:11]([CH3:20])[C:10]2=[O:21])=[C:4]([OH:22])[C:3]=1[I:24]

Participants

5

Reactant 3

HCID 962WaterHCID 25134Boron tribromideHCID 183150713-(4-chloro-6-fluoro-3-iodo-2-methoxyphenyl)-1-methyl-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedione

Product 1

HCID 183150693-(4-chloro-6-fluoro-2-hydroxy-3-iodophenyl)-1-methyl-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedioneYield 93.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Under a nitrogen atmosphere, a stirred solution of 3.0 grams (0.006 mole) of 3-(4-chloro-6-fluoro-3-iodo-2-methoxyphenyl)-1-methyl-6-trifluoromethyl-2,4(1 H,3H)-pyrimidinedione in 75 mL of methylene chloride was cooled in a dry ice/acetone bath and 22.0 mL (0.022 mole) of 1 M boron tribromide (in methylene chloride) was added dropwise during a 20 minute period. Upon completion of addition, the reaction mixture was allowed to warm to ambient temperature were it stirred for about one hour. At the conclusion of this period, the reaction mixture was poured into 200 mL of water and extracted with two 50 mL portions of methylene chloride. The combined extracts were washed with one 100 mL portion of an aqueous saturated sodium chloride solution, dried with sodium sulfate, and filtered. The filtrate was concentrated under reduced pressure, yielding 2.6 grams of title compound. The NMR spectrum was consistent with the proposed structure.

Workup

  1. additionUpon completion of addition
  2. extractionextracted with two 50 mL portions of methylene chloride
  3. washThe combined extracts were washed with one 100 mL portion of an aqueous saturated sodium chloride solution
  4. dry with materialdried with sodium sulfate
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated under reduced pressure

Sources & evidence

ORD record
ord-2c9db3d05e7f4ca39871418a0538746e
Source dataset
uspto-grants-2000_06
Patent number
US06077812

Reaction notes

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