Barium Dichloride as a Powerful and Inexpensive Catalyst for the Pechmann Condensation without Using Solvent

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left">Entry</td><td align="center">Temperature (°C)</td><td align="center">Time (min)</td><td align="center">Yield<sup>a</sup> (%)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">1</td><td align="center">25</td><td align="center">25</td><td align="center">Trace</td></tr><tr><td align="left">2</td><td align="center">70</td><td align="center">25</td><td align="center">50</td></tr><tr><td align="left">3</td><td align="center">100</td><td align="center">25</td><td align="center">90</td></tr><tr><td align="left">4</td><td align="center">130</td><td align="center">25</td><td align="center">80</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><sup>
								a</sup>Refers to isolated yields.<br/></td></tr></table>

The effect of temperature on the synthesis of <b>3a</b> using BaCl<sub>2</sub> (10 mol%) under solvent-free conditions.

Organic Chemistry International

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Table 2

Table 2: Barium Dichloride as a Powerful and Inexpensive Catalyst for the Pechmann Condensation without Using Solvent 