methphenidate synth , Hive Chemistry Discourse
 
    elosejohn 06-29-04 10:30
      <a href="https://www.the-hive.ws/forum/showflat.pl?Number=516256&page=3&view=&sb=&Search=&vc=&new=&start=0&xrated=y&&URLForums=" title="Click here to show this downrated post">methphenidate synth</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">    </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="Post516296"></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"> <font color="#FF0033">Rhodium</font><br> <i>(<span title="The user's title at the time of posting">Chief Bee</span>)</i><br> <span title="Posting date">06-29-04 16:59</span><br> <span title="Link to this post by using the markup [516296]">No 516296</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">threo-Methylphenidate Hydrochloride</b> </td> <td class="text_bg" align="right" valign="top">    </td> <td> </td> </tr> <tr class="text_bg"> <td colspan="2" valign="top" align="left"> <br> The spelling "methylphenidate" may aid you in your searches. <br><br>Also see the following article:<br><br><b>Approaches to the Preparation of Enantiomerically Pure (2R,2'R)-(+)-threo-Methylphenidate Hydrochloride</b><br><i>Mahavir Prashad</i><br><a href="../rhodium/pdf /threo-methylphenidate.pdf" target="_blank" title="Jump to this external site">Adv. Synth. Catal. 343(5), 379-392 (2001)</a> (../rhodium/pdf /threo-methyl<wbr>phenidat<wbr>e.pdf)<br><br><b>Abstract</b><br>Various approaches to the preparation of enantiomerically pure (2R,2'R)-(+)-threo-methylphenidate hydrochloride (<b>1</b>) are reviewed. These approaches include synthesis using enantiomerically pure precursors obtained by resolution, classical and enzyme-based resolution approaches, enantioselective synthesis approaches, and approaches based on enantioselective synthesis of (2S,2'R)-erythro-methylphenidate followed by epimerization at the 2-position. <br> <span title="The signature"><hr><sup>The Hive - Clandestine Chemists Without Borders</sup></span> </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>