Object's details: Synthesis and structure determination of stereoisomeric 2,2’-dibenzoyl-3,3’,4,4’-tetramethyl-1,1’-diphosphaferrocenes

Provider:Repozytorium Uniwersytetu Łódzkiego

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

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Object's details: Synthesis and structure determination of stereoisomeric 2,2’-dibenzoyl-3,3’,4,4’-tetramethyl-1,1’-diphosphaferrocenes

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