1: 75 percent 2: LiOH 3: diethyl azodicarboxylate, triphenylphosphine 4: Mo(CO)6 / acetonitrile; H2O 5: p-TsOH / various solvent(s); methanol 6: DDQ / dioxane / Heating View Scheme

1: 84 percent / phenylisocyanate, Et3N / benzene / Ambient temperature 2: 96 percent / Li2O*H2O / methanol; H2O / 0.17 h / 0 °C 3: 68 percent / diethyldiazocarboxylate, PPh3 / tetrahydrofuran / 24 h / Ambient temperature 4: 41 percent / Mo(CO)6 / acetonitrile; H2O / 2 h / Heating 5: 48 percent / p-TsOH / methanol; various solvent(s) / 1 h / Ambient temperature View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: (i) NaH, 1,2-dimethoxy-ethane, (ii) /BRN= 1209228/, (iii) LiAlH₄, Et₂O<br />2: Py<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '2143189', constants.ctx, '0')">0,2,4-dichlorophenyl-0-methylisopropylamidothiophosphate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3587189', constants.ctx, '0')">hydrogen</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '11378939', constants.ctx, '0')">Lindlar's catalyst</a> <br />&nbsp;2.) pyridine, r.t;&nbsp;&nbsp;Multistep reaction;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: H₂ <br /> <br /> &nbsp;