Oligo(metallocene)s Containing Keto‐Bridged Phospholyl Rings. Issue 10 (19th December 2013)

• Record Type: Journal Article
• Authors: Carmichael, Duncan; le Goff, Xavier‐Frédéric; Muller, Eric
• Other Names: Caporali Maria sponsoringEditor.
• Is Part Of: European journal of inorganic chemistry. Issue 10(2014)
• Page Start: 1610
• Page End: 1614
• Publication Date: 2013-12-19
• Subjects: Oligomers -- Metallocenes -- Ring‐opening polymerization -- Phosphorus -- Autotemplation; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201301144
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: A chiral racemic tris(phosphaferrocene) complex showing two bridging keto functionalities has been prepared diastereoselectively through the elaboration of a single 2, 5‐diester‐substituted phosphaferrocene. The reaction profile involves the intervention of a single trinuclear complex, which contains two phosphametallocene units and an η 1 ‐coordinated phospholyl ligand9, whose organisation determines the stereochemistry of the final product. This complex evolves smoothly to give a chiral triphosphametallocene (±)‐( R *, R *)‐[2, 5‐(2′‐CO2 Me‐3′, 4′‐Me2 PC4 ‐FeCp*)‐(η 5 ‐Me2 PC4 )FeCp*]10 . Abstract : The homologation of a 2, 5‐diester substituted phosphametallocene into a 2′, 5‐diester substituted triphosphametallocene array is presented. The high stereochemical selectivity for the (±)‐( R *, R *) configured triphosphametallocene product is shown to result from an autotemplation of the reaction pathway.