1.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide / 2 h / 20 °C 2.1: p-nitrosobenzene; L-proline / acetonitrile / 24 h / -20 °C 2.2: 0.17 h / -20 °C 2.3: 6 h / 20 °C / 760.05 Torr 3.1: di-isopropyl azodicarboxylate; triphenylphosphine / 1,4-dioxane / 0.83 h / 70 °C 4.1: dichloromethane / 30 h / 20 °C View Scheme

1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione in dimethyl sulfoxide T=20°C; 2 h;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '8128150', constants.ctx, '0')">sodium hydroxide</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3587155', constants.ctx, '0')">water</a> <br />6&nbsp;h;&nbsp;&nbsp;Reflux;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '4546405', constants.ctx, '0')">caesium carbonate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '8128168', constants.ctx, '0')">copper dichloride</a> <br />T=130&deg;C;&nbsp;20&nbsp;h;&nbsp;&nbsp;Inert atmosphereSchlenk technique;&nbsp;&nbsp;Reagent/catalyst;&nbsp;<br /> &nbsp;