n-butyllithium; diisopropylamine in N,N,N',N',N'',N''-hexamethylphosphoric triamide; hexane -78 deg C, 5 min then r.t. 1 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: 66 percent / NaNH₂, NH₃ / diethyl ether / 1 h<br />2: 81 percent / Ca(OCl)2, glacial acetic acid / CH₂Cl₂; H₂O / 0.33 h / 5 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 66 percent / NaNH₂, NH₃ / diethyl ether / 1 h<br />2: 81 percent / Ca(OCl)2, glacial acetic acid / CH₂Cl₂; H₂O / 0.33 h / 5 &deg;C<br /> <br /> &nbsp;