m-Chloroperbenzoic acid → HCID 59568673, compound

Participants

Reaction Steps

To a solution of 4-cyclopropyl-5-vinyl-2-benzofuran-1(3H)-one (440 mg, 2.2 mmol) in 50 mL of DCM was slowly added mCPBA (1.14 g, 6.6 mmol) in 50 mL of DCM at 0° C. After warming to room temperature, the mixture was stirred for 12 hours. The mixture was washed with aqueous Na2SO3 until KI paper didn't change color. The organic layers were combined, washed with brine and then concentrated. The residue was purified via prep-TLC to give product 4-cyclopropyl-5-oxiran-2-yl-2-benzofuran-1(3H)-one.

Provenance & Evidence