1: pyridine / 4 h 2: 2.70 g / AcOH; Zn / 1 h / 50 °C View Scheme

sodium perchromate dihydrate; sulfuric acid in acetic acid T=5 - 20°C; 17.25 h;

Stage #1: &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;<br />Stage #2: <b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11343360', constants.ctx, '0')">sodium hydrogen sulphate</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;0.5&nbsp;h;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3556712', constants.ctx, '0')">potassium <i>tert</i>-butylate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3587154', constants.ctx, '0')">ammonia</a> <br />T=-75 - -65&deg;C;&nbsp;0.5&nbsp;h;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3659929', constants.ctx, '0')">lead(II) bromide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '7366469', constants.ctx, '0')">aluminium</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '605365', constants.ctx, '0')">N,N-dimethyl-formamide</a> <br />1&nbsp;h;&nbsp;<br /> &nbsp;