1: 1.) sec-butyllithium / 1.) THF, 2.) ether 2: 91 percent / H2O2, KF, KHCO3 / 15 h / Ambient temperature View Scheme

1: 1) s-BuLi / 1) cyclohexane, ether, -78 deg C, 1 h, 2) ether, cyclohexane, -78 deg C, 4 h 2: 65 percent / KF, KHCO3, 30percent H2O2 / tetrahydrofuran; methanol / 17 h / Ambient temperature View Scheme