Br2 from Sodium Bromide + Hydrogen Peroxide , Hive Chemicals & Equipment
 
    ChemMang 11-07-02 02:08
      <a href="https://www.the-hive.ws/forum/showflat.pl?Number=377186&page=53&view=&sort=5&Search=&vc=&new=&start=0&xrated=y&&URLForums=" title="Click here to show this downrated post">Br2 from Sodium Bromide + Hydrogen Peroxide</a> <br> <i title="This post has been downrated by the moderators">(Rated as: UTFSE!)</i> </td> <td class="text_bg" align="right" valign="top">  <a href="https://www.the-hive.ws/forum/favorites.pl?Cat=&option=add&number=377186&Number=377186&page=53&view=&sort=5&part=&vc=&new=&backto=showflat" title="Add this post to your bookmark list in your Private Area">Bookmark</a>  </td> <td> </td> </tr> <tr class="text_bg"> <td align="left" valign="bottom"><img src="../forum/images/left_bottom.gif" border="0" height="12" width="9"></td> <td valign="middle" align="center" colspan="7"> </td> <td align="right" valign="bottom"><img src="../forum/images/right_bottom.gif" border="0" height="12" width="9"></td> </tr> <tr class="page_bg"> <td colspan="9"> </td> </tr> <td align="left" valign="top" class="text_bg"> <img src="../forum/images/left_top.gif" border="0" height="12" width="9"></td> <td colspan="7"><a name="Post377198"></a><a name="last"></a></a> </td> <td align="right" valign="top"><img src="../forum/images/right_top.gif" border="0" height="12" width="9"></td> </tr> <tr class="text_bg"> <td rowspan="2"> </td> <td rowspan="2"> </td> <td valign="top" align="center" rowspan="2"> Chromic<br> <i>(<span title="The user's title at the time of posting">Synaptic Self-Mutilator</span>)</i><br> <span title="Posting date">11-07-02 02:57</span><br> <span title="Link to this post by using the markup [377198]">No 377198</span><br> </td> <td rowspan="2">  </td> <td rowspan="2" width="1" class="vert_ruler"> <img src="../forum/images/hr.gif" border="0" width="1" height="1"> </td> <td rowspan="2">  </td> <td class="text_bg" align="left" valign="top"> <b title="The subject of this post">Bromination details</b> </td> <td class="text_bg" align="right" valign="top">  <a href="https://www.the-hive.ws/forum/favorites.pl?Cat=&option=add&number=377198&Number=377198&page=53&view=&sort=5&part=&vc=&new=&backto=showflat" title="Add this post to your bookmark list in your Private Area">Bookmark</a>  </td> <td> </td> </tr> <tr class="text_bg"> <td colspan="2" valign="top" align="left"> <br> This question isn't an easy one to get an answer to. Although the answer is in TFSE, it's buried. I'll do a quick write-up:<br><br>Add 1 mol 2C-H & 0.5L AcOH in a flask. To another flask add 1.2L AcOH, 0.4L water, 118g H2SO4 (1.2mol), 142g KBr (1.2mol) & 58.3g 35% H2O2 (0.6mol). The KBr / H2SO4 / water / AcOH solution will turn from colorless solution to a golden orange-red solution on addition of H2O2 and will pick up the smell of something resembling bleach. Cool freebase in an ice-bath, drip in the Br2 solution. Then drip in 58.3g 35% H2O2 (0.6mol). Work up as usual and get your product.<br><br>The overall reaction is:<br><br>2C-H + H2O2 + KBr + H+ ==> 2C-B + 2 H2O + K+<br><br>I hate to say it, but quite honestly, if you have to ask these questions I doubt you'll be able to have enough know-how to obtain the precursors and complete the reaction as simple as it may be.<br><br>Good luck ... and KEEP STUDYING!!! </td> <td> </td> </tr> <tr class="text_bg"> <td align="left" valign="bottom"><img src="../forum/images/left_bottom.gif" border="0" height="12" width="9"></td> <td valign="middle" align="center" colspan="7"> </td> <td align="right" valign="bottom"><img src="../forum/images/right_bottom.gif" border="0" height="12" width="9"></td> </tr> <tr class="page_bg"> <td colspan="9"> </td> </tr> </body> </html>