Microwave irradiation;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '4122952', constants.ctx, '0')">sodium hydride</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '605365', constants.ctx, '0')">N,N-dimethyl-formamide</a> <br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 4.8 g / phosphorous tribromide / hexane / 1 h / 0 &deg;C<br />2: 571 mg / NaH / dimethylformamide / 6 h / Ambient temperature<br /> <br /> &nbsp;