m-Chloroperbenzoic acid → 6-methyl-5-oxiran-2-yl-2-benzofuran-1(3H)-one

HRID 1501739Notes

Reaction equation

HRID 1501739 reaction equation
[CH:1]([C:3]1[C:12]([CH3:13])=[CH:11][C:6]2[C:7](=[O:10])[O:8][CH2:9][C:5]=2[CH:4]=1)=[CH2:2].C1C=C(Cl)C=C(C(OO)=[O:22])C=1>C(Cl)Cl>[CH3:13][C:12]1[C:3]([CH:1]2[CH2:2][O:22]2)=[CH:4][C:5]2[CH2:9][O:8][C:7](=[O:10])[C:6]=2[CH:11]=1

Participants

4

Reactant 2

HCID 70297m-Chloroperbenzoic acidHCID 666438115-ethenyl-6-methyl-2-benzofuran-1(3H)-one

Product 1

HCID 595686626-methyl-5-oxiran-2-yl-2-benzofuran-1(3H)-one

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of 5-ethenyl-6-methyl-2-benzofuran-1(3H)-one (1.00 g, 5.75 mmol) in 50 mL of DCM was slowly added mCPBA (3.50 g, 17.4 mmol) in 50 mL of DCM at 0° C. The mixture was warmed to room temperature, and stirred for 2 days. The mixture was washed with aqueous Na2SO3 until KI indicator paper didn't change color. The organic layer was washed with brine and then concentrated. The residue was purified via silica column to give the title compound. LC-MS M+1 (calc. 191. found 191).

Workup

  1. customat 0° C
  2. washThe mixture was washed with aqueous Na2SO3 until KI indicator paper didn't change color
  3. washThe organic layer was washed with brine
  4. concentrationconcentrated
  5. customThe residue was purified via silica column

Sources & evidence

ORD record
ord-2ea277f2425e4b45af9611decdd0ccea
Source dataset
uspto-grants-2015_12
Patent number
US09206198B2

Reaction notes

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