Description

• Title:
  Synthesis and structure determination of stereoisomeric 2,2’-dibenzoyl-3,3’,4,4’-tetramethyl-1,1’-diphosphaferrocenes
• Creator:
  Kłys, Arkadiusz;
  Małecka, Magdalena;
  Zakrzewski, Janusz
• Contributor:
  Department of Organic Chemistry, University of Łódź, 90-136 Łódź, Narutowicza 68, Poland;
  Department of Crystallography and Crystal Chemistry, University of Łódź, 90-236 Łódź, Pomorska 149/153, Poland
• Description:
  Dedicated to Professor Jan Epsztajn on the occasion of its 75th anniversary.;
  Reaction of 3,3’,4,4’-tetramethyl-1,1’-diphosphaferrocene 1 with an excess of benzoyl chloride and AlCl3 afforded a ~1:1 mixture of meso- and rac-2,2’-dibenzoyl-3,3’,4,4’-tetramethyl-1,1’- diphosphaferrocenes 2, which were separated by column chromatography. The less polar diastereomer was transformed into its bis-W(CO)5- complex 3. The single crystal X-ray study revealed that this complex contains the meso-2 ligand. Therefore, the more polar diastereomer must be rac-2. It has been suggested that the splitting pattern of the phospholyl protons signal in the 1 H NMR spectra can be used for stereochemistry assignments.;
  Financial support from University of Łódź (grant No 706’505 to MM) is gratefully acknowledged.
• Object availability:
  free access
• Rights:
  Uznanie autorstwa 4.0 Międzynarodowe;
  http://creativecommons.org/licenses/by/4.0
• Date:
  2021.12.17;
  2007
• Type:
  Article
• Language:
  English
• Format:
  application/pdf
• Publisher:
  ARKAT USA
• Relation:
  Arkivoc;vi
• Subject:
  Friedel-Crafts acylation;
  1,1’-diphosphaferrocene;
  stereochemistry;
  X-ray diffraction
• Identifier:
  1424-6376;
  1551-7004;
  http://hdl.handle.net/11089/40079 ;
  1551-7012
• Data provider:
  Repozytorium Uniwersytetu Łódzkiego
• Can I use it?:
  check license
• Type:
  image