1.1: Mg / diethyl ether 1.2: diethyl ether; tetrahydrofuran / 2 h / 20 °C 2.1: BF3*OEt2 / benzene / 2 h / Heating 3.1: 82 percent / Raney nickel W2 / ethanol / 3 h / Heating View Scheme

Stage #1: <a href="#" onclick="return RXDsubstances(event, this, '114692', constants.ctx, '0')">1,3-dihydro-indol-2-one</a> <b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11342940', constants.ctx, '0')">sodium hydroxide</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '506008', constants.ctx, '0')">dimethyl sulfoxide</a> <br />T=10 - 15&deg;C;&nbsp;0.166667&nbsp;h;&nbsp;<br />Stage #2: <a href="#" onclick="return RXDsubstances(event, this, '1098293', constants.ctx, '0')">carbon disulfide</a> &nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '506008', constants.ctx, '0')">dimethyl sulfoxide</a> <br />T=10 - 15&deg;C;&nbsp;<br />Stage #3: <a href="#" onclick="return RXDsubstances(event, this, '635994', constants.ctx, '0')">dimethyl sulfate</a> &nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '506008', constants.ctx, '0')">dimethyl sulfoxide</a> <br />T=20&deg;C;&nbsp;2&nbsp;h;&nbsp;<br /> &nbsp;