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<p><b>1,3-偶極體</b>（1,3-dipole），也稱<b>1,3-偶極化合物</b>，是一類可以用偶極共振式來描述的化合物。它們屬於三原子四電子（4π）體系，至少含有一個雜原子，分子軌道與烯丙基負離子類似。
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<dl><dd><dl><dd><dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\rm {{\ddot {X}}-Y=Z\leftrightarrow X^{+}=Y-{\ddot {Z}}^{-}\,}}}">
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  </semantics></math></span></span></dd></dl></dd></dl></dd></dl><p>1,3-偶極體的種類非常多，常見的包括：
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<dl><dd></dd></dl><p>1,3-偶極體可以和烯烴、炔烴或相關化合物（親偶極體）發生環加成反應生成五元雜環化合物，稱為1,3-偶極環加成反應。
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<h2><span id=".E5.8F.82.E8.A7.81"></span><span id="参见">參見</span></h2>
<ul><li>1,3-偶極環加成反應</li></ul><h2><span id=".E5.8F.82.E8.80.83.E8.B5.84.E6.96.99"></span><span id="参考资料">參考資料</span></h2>
<ul><li><cite class="citation journal">Huisgen, Prof. Dr. R. Kinetics and Mechanism of 1,3-Dipolar Cycloadditions. Angew. Chem. Int. Ed. 1962, <b>11</b> (2): 633–645. <span title="數位物件識別號">doi:10.1002/anie.196306331</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rfr_id=info%3Asid%2Fzh.wikipedia.org%3A1%2C3-%E5%81%B6%E6%9E%81%E4%BD%93&amp;rft.atitle=Kinetics+and+Mechanism+of+1%2C3-Dipolar+Cycloadditions&amp;rft.aufirst=Prof.+Dr.+R.&amp;rft.aulast=Huisgen&amp;rft.date=1962&amp;rft.genre=article&amp;rft.issue=2&amp;rft.jtitle=Angew.+Chem.+Int.+Ed.&amp;rft.pages=633-645&amp;rft.volume=11&amp;rft_id=info%3Adoi%2F10.1002%2Fanie.196306331&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal"><span> </span></span></li>
<li><cite class="citation book">Padwa, Albert. 1, 3-dipolar cycloaddition chemistry. New York: Wiley. 1984.</cite><span title="ctx_ver=Z39.88-2004&amp;rfr_id=info%3Asid%2Fzh.wikipedia.org%3A1%2C3-%E5%81%B6%E6%9E%81%E4%BD%93&amp;rft.aufirst=Albert&amp;rft.aulast=Padwa&amp;rft.btitle=1%2C+3-dipolar+cycloaddition+chemistry&amp;rft.date=1984&amp;rft.genre=book&amp;rft.place=New+York&amp;rft.pub=Wiley&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook"><span> </span></span> ISBN 978-0-471-08364-1.</li>
<li>S. Kobayashi, K.A. Jørgensen, <i>Cycloaddition Reaction in Organic Synthesis</i>, Wiley-VCH, Weinheim 2002</li></ul><!-- 
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**1,3 - 偶極體**（1,3-dipole），也稱 **1,3 - 偶極化合物**，是一類可以用偶極共振式來描述的化合物。它們屬於三原子四電子（4π）體系，至少含有一個雜原子，分子軌道與烯丙基負離子類似。

　
: : : ${\rm {{\ddot {X}}-Y=Z\leftrightarrow X^{+}=Y-{\ddot {Z}}^{-}\,}}$

1,3 - 偶極體的種類非常多，常見的包括：

　
:

1,3 - 偶極體可以和烯烴、炔烴或相關化合物（親偶極體）發生環加成反應生成五元雜環化合物，稱為 1,3 - 偶極環加成反應。

## 參見

* 1,3 - 偶極環加成反應

## 參考資料

* Huisgen, Prof. Dr. R. Kinetics and Mechanism of 1,3-Dipolar Cycloadditions. Angew. Chem. Int. Ed. 1962, **11** (2): 633–645. doi:10.1002/anie.196306331.
* Padwa, Albert. 1, 3-dipolar cycloaddition chemistry. New York: Wiley. 1984.  ISBN 978-0-471-08364-1.
* S. Kobayashi, K.A. Jørgensen, _Cycloaddition Reaction in Organic Synthesis_, Wiley-VCH, Weinheim 2002
1,3-偶极体