1: 69 percent / MeNH2 / methanol / 3 h / 20 °C 2: 93 percent / dimethylformamide / 9 h / 50 °C 3: 89 percent / TBAF; AcOH / tetrahydrofuran / 0.17 h / 0 °C View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1868911', constants.ctx, '0')">trimethylsilyl trifluoromethanesulfonate</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '605283', constants.ctx, '0')">triethylamine</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1730800', constants.ctx, '0')">dichloromethane</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '635760', constants.ctx, '0')">toluene</a> <br />T=20&deg;C;&nbsp;Pummerer reaction;&nbsp;0.25&nbsp;h;&nbsp;<br /> &nbsp;