1: 82 percent / Jones' reagent / acetone / 0.25 h / -15 - -10 °C 2: 72 percent / n-C4H9Br, Li / tetrahydrofuran; diethyl ether / 1.) -10 deg C, 2 h; -5 deg C, 3 h, 2.) -5 deg C, 3 h View Scheme

jones' reagent in acetone T=-15 - -10°C; 0.25 h;