In this paper, Grubbs- and Hoveyda–Grubbs-type olefin metathesis catalysts featuring N-cyclopentyl/N’-mesityl backbone-substituted N-heterocyclic carbene (NHC) ligands were synthesized. Their propensity to promote the alternating ring-opening copolymerization (ROMP) of norbornene (NBE) with cyclooctene (COE) or cyclopentene (CPE) was evaluated compared that shown by analogous N-cyclohexyl compl...

The catalysis by S, 1 0, IS,20-tetrakis(pentafluorophenyl)-21H,23H-porphyrin iron(III) chloride (F20 TPPFeCl) of alkene epoxidation by H20 2 has been investigated. Extensive catalyst decomposition was observed during the reaction. A kinetics and product yield analysis has shown that this decomposition does not occur via either the oxoperferryl intermediate (F 20 TPP·+)F e =0 or the oxoferryl in...

Post-synthesis DNA modification is a very useful method for DNA functionalization. This is achieved by using a modified NTP, which has a handle for further modifications, replacing the corresponding natural NTP in polymerase-catalyzed DNA synthesis. Subsequently, the handle can be used for further functionalization, preferably through a very fast reaction. Herein we describe polymerase-mediated...

Manganese metal-organic framework (Mn-MOF) containing Mn2+ ions, benzenetricarboxylic acid (BTC) and N,N-dimethylformamid (DMF) was prepared and used as catalyst for oxidation of alkenes such as 1,1-diphenylethylene, trans-stilbene, cyclohexene, norbornene, styrene and cyclooctene to epoxides with 33-92% conversion and 75-100% selectivity and oxidation of alkanes such as fluorene, adamantane, e...

Abstract Using a magnetron sputtering approach that allows size-controlled formation of nanoclusters, we have created palladium nanoclusters combine the features both heterogeneous and homogeneous catalysts. Here report atomic structures electronic environments series metal in ionic liquids at different stages formation, leading to discovery Pd with core ca . 2 nm surrounded by diffuse dynamic ...

Mn and Fe BPMEN complexes showed excellent reactivity in catalytic oxidation with an excess of co-reagent (CH3COOH). In the straight line a cleaner system, volatile acetic acid was replaced by SiO2 (nano)particles two different sizes to which pending carboxylic functions were added (SiO2@COOH). The SiO2@COOH beads obtained functionalization nitrile (SiO2@CN) followed CN hydrolysis. All silica c...