1: 1) Mg / 1) THF, reflux, 2) THF, 1.5 h, r.t. 2: 86 percent / 30percent H2O2, 6N NaOH / methanol / 1 h / Ambient temperature 3: 1) KH / 1) THF, 5 min, 2) THF, 24 h, r.t. View Scheme

1: 86 percent / 30percent H2O2, 6N NaOH / methanol / 1 h / Ambient temperature 2: 1) KH / 1) THF, 5 min, 2) THF, 24 h, r.t. View Scheme

potassium hydride 1) THF, 5 min, 2) THF, 24 h, r.t.; Yield given. Multistep reaction;

Multistep reaction;