diisobutylaluminium hydride in toluene T=-70°C;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '19456994', constants.ctx, '0')">2,6-di(2-ethylhexyl)pyridine</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3587218', constants.ctx, '0')">oxygen</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3602276', constants.ctx, '0')">palladium diacetate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '385737', constants.ctx, '0')">acetic anhydride</a> <br />T=0 - 90&deg;C;&nbsp;P=760.051&nbsp;Torr;&nbsp;36.25&nbsp;h;&nbsp;&nbsp;regioselective reaction;&nbsp;<br /> &nbsp;