6533b851fe1ef96bd12aa08d
RESEARCH PRODUCT
Optically Active Hyperbranched Polyglycerol as Scaffold for Covalent and Noncovalent Immobilization of Platinum(II) NCN-Pincer Complexes. Catalytic Application and Recovery
M.q. SlagtHolger KautzR.j.m. Klein GebbinkG. Van KotenSalah-eddine StiribaHolger Freysubject
Organic Chemistrychemistry.chemical_elementCatalysisPincer movementInorganic Chemistrychemistry.chemical_compoundSulfonatechemistryPolymerizationCovalent bondAmphiphilePolymer chemistryPhysical and Theoretical ChemistrySelectivityPlatinumdescription
New optically active hyperbranched polymers have been used as microenvironments as well as scaffolds for noncovalent and covalent immobilization of pincer platinum(II) complexes, respectively. The catalytic activity/selectivity of the incorporated platinum(II) complexes in these polymeric chiral supports was investigated. Chiral amphiphilic hyperbranched polyglycerols with core−shell “nanocapsules” structure, namely (−)-P(G40C160.5) (1) and (+)-P(G73C160.5) (2), have been prepared in two straightforward steps by ring-opening multibranching polymerization (ROMBP) of either (−)- or (+)-glycidol, resulting in (−)-PG40 (Mn = 3000, Mw/Mn = 1.3) or (+)-PG73 (Mn = 5500, Mw/Mn = 1.6), respectively. Polymerization was followed by partial esterification of a certain fraction of OH groups with palmitoyl chloride. Multifunctional hydrophilic NCN-pincer platinum(II) complexes with sulfonate groups, [PtCl(NCN-SO3H)] (3; NCN = 2,6-bis[(dimethylamino)methyl]phenyl anion), were encapsulated in 1 and 2. The NCN-pincer plat...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-02-24 | Organometallics |