in cyclohexane T=22°C; Irradiation; Quantum yield;

1: 42 percent / diethyl ether; cyclohexane / 1.) -70 deg C, 10 min, 2.) 20 deg C, 20 min 2: 1.) sodium azide, trifluoroacetic acid, 2. ) LAH / 1.) CHCl3, room temperature, 4 h, 2.) ether, reflux, 3 h 3: 86 percent / K2CO3 / dimethylformamide / 48 h / 60 °C View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3903544', constants.ctx, '0')">chromic acid</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a> <br />3&nbsp;h;&nbsp;&nbsp;Ambient temperature;&nbsp;<br /> &nbsp;