<p><b>1,6-二碘己烷</b>是一種碘代烷，化學式 C<sub>6</sub>H<sub>12</sub>I<sub>2</sub>。
</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>1,6-二碘己烷可以由1,6-己二醇、紅磷和碘反應而成。它也可以由碘化鈉和1,6-二溴己烷的芬克爾斯坦反應產生。</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {Br{-}(CH_{2})_{6}{-}Br\ +\ 2\ NaI\ \longrightarrow \ } }">
  <semantics>
    <mrow class="MJX-TeXAtom-ORD">
      <mstyle displaystyle="true" scriptlevel="0">
        <mrow class="MJX-TeXAtom-ORD">
          <mi mathvariant="normal">B</mi>
          <mi mathvariant="normal">r</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mo>−<!-- − --></mo>
          </mrow>
          <mo stretchy="false">(</mo>
          <mi mathvariant="normal">C</mi>
          <msub>
            <mi mathvariant="normal">H</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>2</mn>
            </mrow>
          </msub>
          <msub>
            <mo stretchy="false">)</mo>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>6</mn>
            </mrow>
          </msub>
          <mrow class="MJX-TeXAtom-ORD">
            <mo>−<!-- − --></mo>
          </mrow>
          <mi mathvariant="normal">B</mi>
          <mi mathvariant="normal">r</mi>
          <mtext> </mtext>
          <mo>+</mo>
          <mtext> </mtext>
          <mn>2</mn>
          <mtext> </mtext>
          <mi mathvariant="normal">N</mi>
          <mi mathvariant="normal">a</mi>
          <mi mathvariant="normal">I</mi>
          <mtext> </mtext>
          <mo stretchy="false">⟶<!-- ⟶ --></mo>
          <mtext> </mtext>
        </mrow>
      </mstyle>
    </mrow>
    <annotation encoding="application/x-tex">{\displaystyle \mathrm {Br{-}(CH_{2})_{6}{-}Br\ +\ 2\ NaI\ \longrightarrow \ } }</annotation>
  </semantics></math></span></span> <span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {I{-}(CH_{2})_{6}{-}I\ +\ 2\ NaBr} }">
  <semantics>
    <mrow class="MJX-TeXAtom-ORD">
      <mstyle displaystyle="true" scriptlevel="0">
        <mrow class="MJX-TeXAtom-ORD">
          <mi mathvariant="normal">I</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mo>−<!-- − --></mo>
          </mrow>
          <mo stretchy="false">(</mo>
          <mi mathvariant="normal">C</mi>
          <msub>
            <mi mathvariant="normal">H</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>2</mn>
            </mrow>
          </msub>
          <msub>
            <mo stretchy="false">)</mo>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>6</mn>
            </mrow>
          </msub>
          <mrow class="MJX-TeXAtom-ORD">
            <mo>−<!-- − --></mo>
          </mrow>
          <mi mathvariant="normal">I</mi>
          <mtext> </mtext>
          <mo>+</mo>
          <mtext> </mtext>
          <mn>2</mn>
          <mtext> </mtext>
          <mi mathvariant="normal">N</mi>
          <mi mathvariant="normal">a</mi>
          <mi mathvariant="normal">B</mi>
          <mi mathvariant="normal">r</mi>
        </mrow>
      </mstyle>
    </mrow>
    <annotation encoding="application/x-tex">{\displaystyle \mathrm {I{-}(CH_{2})_{6}{-}I\ +\ 2\ NaBr} }</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E7.94.A8.E5.A4.84"></span><span id="用处">用處</span></h2>
<p>碘是極佳的離去基團，因此1,6-二碘己烷和親核試劑的反應可以形成各種1,6-己烷衍生物。1,6-二碘己烷和1,6-二溴己烷和硫化鉀反應都可產生噻環庚烷。</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {I{-}(CH_{2})_{6}{-}I\ +\ K_{2}S\ \longrightarrow \ C_{6}H_{12}S\ +\ 2\ KI} }">
  <semantics>
    <mrow class="MJX-TeXAtom-ORD">
      <mstyle displaystyle="true" scriptlevel="0">
        <mrow class="MJX-TeXAtom-ORD">
          <mi mathvariant="normal">I</mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mo>−<!-- − --></mo>
          </mrow>
          <mo stretchy="false">(</mo>
          <mi mathvariant="normal">C</mi>
          <msub>
            <mi mathvariant="normal">H</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>2</mn>
            </mrow>
          </msub>
          <msub>
            <mo stretchy="false">)</mo>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>6</mn>
            </mrow>
          </msub>
          <mrow class="MJX-TeXAtom-ORD">
            <mo>−<!-- − --></mo>
          </mrow>
          <mi mathvariant="normal">I</mi>
          <mtext> </mtext>
          <mo>+</mo>
          <mtext> </mtext>
          <msub>
            <mi mathvariant="normal">K</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>2</mn>
            </mrow>
          </msub>
          <mi mathvariant="normal">S</mi>
          <mtext> </mtext>
          <mo stretchy="false">⟶<!-- ⟶ --></mo>
          <mtext> </mtext>
          <msub>
            <mi mathvariant="normal">C</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>6</mn>
            </mrow>
          </msub>
          <msub>
            <mi mathvariant="normal">H</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>12</mn>
            </mrow>
          </msub>
          <mi mathvariant="normal">S</mi>
          <mtext> </mtext>
          <mo>+</mo>
          <mtext> </mtext>
          <mn>2</mn>
          <mtext> </mtext>
          <mi mathvariant="normal">K</mi>
          <mi mathvariant="normal">I</mi>
        </mrow>
      </mstyle>
    </mrow>
    <annotation encoding="application/x-tex">{\displaystyle \mathrm {I{-}(CH_{2})_{6}{-}I\ +\ K_{2}S\ \longrightarrow \ C_{6}H_{12}S\ +\ 2\ KI} }</annotation>
  </semantics></math></span></span></dd></dl><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>
**1,6 - 二碘己烷**是一種碘代烷，化學式 C6H12I2。

## 製備

1,6 - 二碘己烷可以由 1,6 - 己二醇、紅磷和碘反應而成。它也可以由碘化鈉和 1,6 - 二溴己烷的芬克爾斯坦反應產生。

　
: $\mathrm {Br{-}(CH_{2})_{6}{-}Br\ +\ 2\ NaI\ \longrightarrow \ } $ $\mathrm {I{-}(CH_{2})_{6}{-}I\ +\ 2\ NaBr} $

## 用處

碘是極佳的離去基團，因此 1,6 - 二碘己烷和親核試劑的反應可以形成各種 1,6 - 己烷衍生物。1,6 - 二碘己烷和 1,6 - 二溴己烷和硫化鉀反應都可產生噻環庚烷。

　
: $\mathrm {I{-}(CH_{2})_{6}{-}I\ +\ K_{2}S\ \longrightarrow \ C_{6}H_{12}S\ +\ 2\ KI} $

## 參考資料
1,6-二碘己烷