1: 96 percent / benzene / 1.5 h 2: 93 percent / NH3 gas / Ambient temperature 3: 1.) HCl gas, 2.) Et3N / 1.) toluene, RT, overnight, 2.) 2-propanol, reflux, 3 h View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11343078', constants.ctx, '0')">sodium tetrahydroborate</a> <br />&nbsp;1.) 2-propanol, reflux, 6 h, 2.) MeOH, RT, 3 h;&nbsp;&nbsp;Yield given. Multistep reaction;&nbsp;<br /> &nbsp;