1: 100 percent / hydrogen / platinum(IV) oxide / ethanol / 2.5 h / 760 Torr 2: 94 percent / pyridine / 72 h / Ambient temperature 3: 76 percent / 6 M aq. HCl / dioxane / 24 h / Heating 4: 76 percent / N-bromosuccinimide / tetrahydrofuran / 3 h / Ambient temperature View Scheme

1: 100 percent / hydrogen / platinum(IV) oxide / ethanol / 2.5 h / 760 Torr 2: 94 percent / pyridine / 72 h / Ambient temperature 3: 76 percent / 6 M aq. HCl / dioxane / 24 h / Heating 4: 76 percent / N-bromosuccinimide / tetrahydrofuran / 3 h / Ambient temperature 5: 1.) butyllithium / 1.) hexane, THF, -78 deg C, 15 min, 2.) hexane, THF, 30 min 6: 1.) (COCl)2, DMSO, 2.) Et3N / 1.) CH2Cl2, -60 deg C, 30 min, 2.) CH2Cl2, from -60 deg C to RT View Scheme

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '969212', constants.ctx, '0')">benzene</a> <br />5.25&nbsp;h;&nbsp;&nbsp;Heating;&nbsp;<br /> &nbsp;