lithium diisopropyl amide in tetrahydrofuran Yield given. Yields of byproduct given. Title compound not separated from byproducts;

lithium diisopropyl amide in tetrahydrofuran Yield given. Yields of byproduct given. Title compound not separated from byproducts;

<b>Multi-step reaction with 3 steps<br /> </b>1: 66 percent / Dowex 50*8 / pyridinium 4-toluenesulfonate / CH₂Cl₂ / Heating<br />2: 99 percent / TiCl₄ / CH₂Cl₂ / -75 deg C to r.t, 12 h<br />3: 85 percent / K₂CO₃, 30percent H₂O₂ / methanol; H₂O; various solvent(s) / 2 h / Ambient temperature<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: 66 percent / 5-10 Molpercent pyridinium-4-toluolsulfonate / CH₂Cl₂ <br />2: 1) TiCl₄ / 1) CH₂Cl₂, -75 deg C, 2) CH₂Cl₂, -75 deg C to room temp., 12 h<br />3: H₂O₂, K₂CO₃, MeOH / various solvent(s)<br /> <br /> &nbsp;