[reaction: see text] We report here our observation that, using appropriate reaction conditions, the Sonogashira reaction can be performed without the need for transition-metal catalysts. Our approach involves the use of water as a solvent, poly(ethylene glycol) as a phase-transfer agent, and so...
In this context, efforts to convert CO2 to useful chemicals will inevitably rely on its activation through molecular catalysts, particularly transition-metal catalysts. Two preparative processes employing solid catalyst or CO2-philic homogeneous catalyst were devised for environmentally benign synthesis of ...
Infrared multiphoton dissociation of transition metal containing ions: MC{sub n}H{sub 2n}{sup +} (M = Fe, Co, Ni; n = 2-5 ) The infrared multiphoton dissociation (IRMPD) processes of groups 8-10 (Fe, Co, Ni) transition metal ion complexes containing acetylene and alkenes were in......
Transition metal; platinum group PRONUNCIATIONY PLAT-num The primary use of platinum and other platinum metals is as catalysts. A catalyst is a substance used to speed up or slow down a chemical reaction without undergoing any change itself. For example, the catalytic converter in an autom...
Low-molecular-weight thiols such asmethanethiol (CH3SH) are found in crudepetroleum. As such, they pose serious problems, associated not only with objectionable odours but also with their corrosive effect on equipment and their ability to poison (render nonfunctional)catalystsfor air-pollution control...
Rates of reaction Catalysts Photochemical reactions Reversible reactions and chemical equilibria Exothermic and Endothermic Reactions Heat of Combustion Heat of Displacement Rates of Reaction Rate of Reaction and Concentration Photochemical Reactions Chemical Equilibrium ...
It is used as a foaming agent in the preparation of polymer foams, as well as a precursor to polymerization catalysts and pharmaceuticals, and as an oxygen scavenger in power plants. Hydrazoic acidIt is primarily used for stock solution preservation and as a reagent. Hydrochloric acidIt is a...
Glycoengineering of bioactive molecules by modified plant UGTs is more attractive than organic synthesis, due to numerous drawbacks that include unwanted anomers produced during the different steps, use of heavy metal catalysts and low yields [147]. Protein engineering strategies to produce novel GTs ...
One of the earliest to be discovered was tetracarbonylnickel, a volatile nickel compound that became the basis of a process for purifying nickel. Metal carbonyls are employed as catalysts in many reactions in the petrochemical industry.
We report here our observation that, using appropriate reaction conditions, the Sonogashira reaction can be performed without the need for transition-metal catalysts. Our approach involves the use of water as a solvent, poly(ethylene glycol) as a phase-transfer agent, and sodium hydroxide as a ba...