1: DIPEA, PDT / CH2Cl2 / 2 h 2: pyridine / 2 h / Ambient temperature View Scheme

pyridine; sodium tetrahydroborate 1.) CH2Cl2, MeOG, 10 min, 2.) room temperature, 2 h; Yield given. Multistep reaction;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1903730', constants.ctx, '0')">trimethylsilylazide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '19253272', constants.ctx, '0')">3 A molecular sieve</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3903215', constants.ctx, '0')">tin(IV) chloride</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1730800', constants.ctx, '0')">dichloromethane</a> <br />12&nbsp;h;&nbsp;&nbsp;Ambient temperature;&nbsp;<br /> &nbsp;