18-crown-6 ether; potassium hydroxide in benzene retro Favorski reaction;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3666958', constants.ctx, '0')">diisopropylammonium bromide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '8813613', constants.ctx, '0')">tri tert-butylphosphoniumtetrafluoroborate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '11405916', constants.ctx, '0')">copper(l) iodide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '14324919', constants.ctx, '0')">sodium tetrachloropalladate(II)</a>&nbsp;<b>in</b>&nbsp; various solvent(s)<br />T=80&deg;C;&nbsp;Sonogashira coupling;&nbsp;20&nbsp;h;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3599376', constants.ctx, '0')">tetra-n-butylammonium acetate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '19234544', constants.ctx, '0')">[5-Cl-2-{(4-Cl-phenyl)-[(E)-HO-imino]methyl}phenyl-PdCl]2</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '106420', constants.ctx, '0')">1-methyl-pyrrolidin-2-one</a> <br />T=110&deg;C;&nbsp;Sonogashira coupling;&nbsp;5&nbsp;h;&nbsp;<br /> &nbsp;

Stage #1: <a href="#" onclick="return RXDsubstances(event, this, '1099287', constants.ctx, '0')">1-chloro-4-ethynylbenzene</a> <b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1209227', constants.ctx, '0')">n-butyllithium</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '1730733', constants.ctx, '0')">hexane</a> <br />T=-78 - 0&deg;C;&nbsp;<br />Stage #2: <a href="#" onclick="return RXDsubstances(event, this, '635680', constants.ctx, '0')">acetone</a> &nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '1730733', constants.ctx, '0')">hexane</a> <br />T=0&deg;C;&nbsp;2&nbsp;h;&nbsp;&nbsp;Further stages.;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3599376', constants.ctx, '0')">tetra-n-butylammonium acetate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '19281482', constants.ctx, '0')">oxime palladacycles derived from 4,4'-dichlorobenzophenone</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '106420', constants.ctx, '0')">1-methyl-pyrrolidin-2-one</a> <br />T=110&deg;C;&nbsp;Sonogashira coupling reaction;&nbsp;5&nbsp;h;&nbsp;<br /> &nbsp;