potassium hydroxide; hydrazine hydrate 1.) ethyleneglycol, heating, 0.5 h, 2.) heating, 4 h; Yield givenMultistep reaction;

1: 96 percent / NaBH4 / methanol / 1 h / 0 °C 2: 1.) aq. NaOH, 2.) conc. aq. HCl / 1.) methanol, RT, 0.5 h, 2.) RT, 2 h View Scheme

1: aq. N2H4 / Heating 2: 64 percent / SeO2 / various solvent(s) / Heating View Scheme

sodium acetate; hydrazine hydrate in methanol condensation; Heating;

Stage #1: &nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '102391', constants.ctx, '0')">tetrahydrofuran</a> <br />T=50&deg;C;&nbsp;48&nbsp;h;&nbsp;<br />Stage #2: <b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3903066', constants.ctx, '0')">iron(III) chloride</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '102391', constants.ctx, '0')">tetrahydrofuran</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a> <br />336000&nbsp;h;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3903215', constants.ctx, '0')">tin(IV) chloride</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1730800', constants.ctx, '0')">dichloromethane</a> <br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '8128144', constants.ctx, '0')">copper(I) bromide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '8128145', constants.ctx, '0')">lithium bromide</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '102391', constants.ctx, '0')">tetrahydrofuran</a> <br />0.5&nbsp;h;&nbsp;&nbsp;Ambient temperature;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 100 percent / SOCl₂ / CH₂Cl₂ / Heating<br />2: 83 percent / SnCl₄ / CH₂Cl₂ / 20 &deg;C<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '14314213', constants.ctx, '0')">PhCH₂Pd(PPh₃)2Cl</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '635760', constants.ctx, '0')">toluene</a> <br />&nbsp;Heating;&nbsp;<br /> &nbsp;