Yield given. Multistep reaction;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '610662', constants.ctx, '0')">dicyclohexyl-carbodiimide</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1730800', constants.ctx, '0')">dichloromethane</a> <br />T=0&deg;C;&nbsp;<br /> &nbsp;

<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, '741857', constants.ctx, '0')">acetonitrile</a> <br />&nbsp;cooling;&nbsp;<br /> &nbsp;