1: 68 percent / 18-crown-6 / dimethylformamide / 8 h / 70 °C 2: 53 percent / CF3COOH, Hg(OAc)2 / 4 h 3: 80 percent / K2CO3 / methanol; H2O / 24 h / Ambient temperature View Scheme

1: 68 percent / 18-crown-6 / dimethylformamide / 8 h / 70 °C 2: 53 percent / CF3COOH, Hg(OAc)2 / 4 h View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '505944', constants.ctx, '0')">ethanolamine</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '8127933', constants.ctx, '0')">copper(l) chloride</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '906698', constants.ctx, '0')"><i>tert</i>-butyl alcohol</a> <br />24&nbsp;h;&nbsp;&nbsp;Heating;&nbsp;<br /> &nbsp;