No abstract

Transparent films were prepared by cross‐linking polyunsaturated poly(ether carbonate)s obtained by the multicomponent polymerization of CO2, propylene oxide, maleic anhydride, and allyl glycidyl ether. Poly(ether carbonate)s with ABXBA multiblock structures were obtained by sequential addition of mixtures of propylene oxide/maleic anhydride and propylene oxide/allyl glycidyl ether during the polymerization. The simultaneous addition of both monomer mixtures provided poly(ether carbonate)s with AXA triblock structures. Both types of polyunsaturated poly(ether carbonate)s are characterized by diverse functional groups, that is, terminal hydroxy groups, maleate moieties along the polymer backbone, and pendant allyl groups that allow for versatile polymer chemistry. The combination of double bonds substituted with electron‐acceptor and electron‐donor groups enables particularly facile UV‐ or redox‐initiated free‐radical curing. The resulting materials are transparent and highly interesting for coating applications.

This paper describes the synthesis and characterization of [Cr(babhq)OAcF(EtOH)] (OAcF− = CF3CO2−) as well as the application of the complex as the catalyst in the reaction of CO2 with epoxides.

In this contribution, the synthesis of a new class of chiral polyamino alcohols (PAA) via a twostep hydroaminomethylation/hydrolysis procedure is reported. The chiral polyamines are obtained by hydroaminomethylation of N-olefinic oxazolidinones with different amines in first step followed by hydrolysis of the resulting polyamines to give the chiral PAA in the second step. The dendritic chiral PAA (Mw = 1300-1400 g mol À1) are also synthesized efficiently through a multifold hydroaminomethylation/ hydrolysis procedure. Furthermore, chiral PAA are investigated as ligands in ruthenium-catalyzed asymmetric hydrogen transfer reduction of acetophenone to 1-phenyl alcohol.