Cycloaddition Reaction of Ethyl Thioxoacetate and the Dienamine Derived from Pummerer's Ketone

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td align="center" colspan="5"><img alt="813451.tab.007" src="https://static.hindawi.com/articles/jchem/volume-2013/813451/figures/813451.tab.007.jpg"/></td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td align="left">  Found</td><td align="center">  Calculated</td><td align="center">   %</td><td align="center">   Composition</td><td align="center">   Constitution</td></tr><tr><td align="left" colspan="5"><hr/></td></tr><tr><td align="left"> 304.0773</td><td align="center"> 304.0769</td><td align="center"> 7.6</td><td align="center"> C<sub>16</sub>H<sub>16</sub>O<sub>4</sub>S</td><td align="center"><span style="width: 28.475px;"><svg height="13.1125" id="M4" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 28.475 13.1125" width="28.475" xmlns="http://www.w3.org/2000/svg">
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<g transform="translate(72,-61.51)">
<text transform="matrix(1,0,0,-1,-71.95,61.56)">
<tspan style="font-size: 12.50px; " x="0" y="0">M</tspan>
</text>
<text transform="matrix(1,0,0,-1,-60.83,66.56)">
<tspan style="font-size: 8.75px; " x="0" y="0">+</tspan>
<tspan style="font-size: 8.75px; " x="6.4899998" y="-1.5">•</tspan>
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</svg></span></td></tr><tr><td align="left"> 215.0511</td><td align="center"> 215.0521</td><td align="center"> 0.7</td><td align="center"> C<sub>13</sub>H<sub>11</sub>OS</td><td align="center">M-C<sub>3</sub>H<sub>5</sub>O<sub>3</sub><svg height="15.55" id="M5" style="vertical-align:-1.95624pt" version="1.1" viewbox="0 0 19.7875 15.55" width="19.7875" xmlns="http://www.w3.org/2000/svg">
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<text transform="matrix(1,0,0,-1,-67.79,66.56)">
<tspan style="font-size: 8.75px; " x="0" y="0">+</tspan>
<tspan style="font-size: 8.75px; " x="6.5" y="-1.5">•</tspan>
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</svg></td></tr><tr><td align="left"> 214.0993</td><td align="center"> 214.0994</td><td align="center"> 2.1</td><td align="center"> C<sub>14</sub>H<sub>14</sub>O<sub>2</sub></td><td align="center"><img alt="813451.tab.008" src="https://static.hindawi.com/articles/jchem/volume-2013/813451/figures/813451.tab.008.jpg"/></td></tr><tr><td align="left"> 159.0809</td><td align="center"> 159.0810</td><td align="center"> 100</td><td align="center"> C<sub>11</sub>H<sub>11</sub>O</td><td align="center"><img alt="813451.tab.009" src="https://static.hindawi.com/articles/jchem/volume-2013/813451/figures/813451.tab.009.jpg"/></td></tr><tr><td align="left">146.0727</td><td align="center"> 146.0731</td><td align="center"> 11.3</td><td align="center"> C<sub>10</sub>H<sub>10</sub>O</td><td align="center"><img alt="813451.tab.0010" src="https://static.hindawi.com/articles/jchem/volume-2013/813451/figures/813451.tab.0010.jpg"/></td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Mass spectrum of 1,2,3,4a,9b-hexahydro-8,9b-dimethyl-3-oxo-4,1-(epithiomethano)dibenzofuran-11-endo-carboxylic acid (23). 

Journal of Chemistry

tab4

Table 4

Table 4: Cycloaddition Reaction of Ethyl Thioxoacetate and the Dienamine Derived from Pummerer's Ketone 