1: 69 percent / NaOMe / methanol; tetrahydrofuran 2: LDA / tetrahydrofuran 3: NaBH4 4: DMF dineopentyl acetal / CHCl3 / Heating View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1209227', constants.ctx, '0')">n-butyllithium</a> <br />&nbsp;Yield given. Multistep reaction;&nbsp;<br /> &nbsp;