1: sulfuric acid / tetrahydrofuran; water / 2 h / 50 °C 2: hydrogen / methanol / 4 h / 50 °C / 7500.75 Torr View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '103233', constants.ctx, '0')">pyridine</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1730800', constants.ctx, '0')">dichloromethane</a> <br />T=30 - 35&deg;C;&nbsp;2.5&nbsp;h;&nbsp;<br /> <br /> &nbsp;