Acidic conditions;

diphenylchloroborane; silver trifluoromethanesulfonate 1.) toluene, 0 deg C, 1 h; 2.) toluene, -78 deg C, 22 h; Yield given. Multistep reaction;

<b>With</b>&nbsp; [((4S,4S)-Ph-BOX)ZnOMe](at)SBA-15₋₇₀₀&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1740230', constants.ctx, '0')">[D₃]acetonitrile</a> <br />T=60&deg;C;&nbsp;5&nbsp;h;&nbsp;&nbsp;Inert atmosphereGlovebox;&nbsp;&nbsp;Reagent/catalyst;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '14581698', constants.ctx, '0')">iron(III) trifluoromethanesulfonate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '4151241', constants.ctx, '0')">NaBEt₃H</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '7952025', constants.ctx, '0')">(4'S,5'S)-2,2-bis[4'-hydroxymethyl-5'-phenyl-1',3'-oxazolin-2'-yl]propane</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '102391', constants.ctx, '0')">tetrahydrofuran</a> <br />T=-20 - 20&deg;C;&nbsp;16&nbsp;h;&nbsp;&nbsp;Inert atmosphereSchlenk technique;&nbsp;&nbsp;Overall yield = 90 percent; Optical yield = 2 percent ee; enantioselective reaction;&nbsp;<br /> &nbsp;