Catalytic Dimerization of Monoalkyl Acetylenes
نویسندگان
چکیده
منابع مشابه
Atom-economic catalytic amide synthesis from amines and carboxylic acids activated in situ with acetylenes
Amide bond-forming reactions are of tremendous significance in synthetic chemistry. Methodological research has, in the past, focused on efficiency and selectivity, and these have reached impressive levels. However, the unacceptable amounts of waste produced have led the ACS GCI Roundtable to label 'amide bond formation avoiding poor atom economy' as the most pressing target for sustainable syn...
متن کاملSelective removal of acetylenes from olefin mixtures through specific physicochemical interactions of ionic liquids with acetylenes.
Imidazolium-based ionic liquids (ILs) bearing an alkylphosphite anion, were highly efficient for the selective removal of acetylenes in olefins. Comparison of solubility data at 313 K and at atmospheric pressure shows that the solubilities of acetylene and propyne in 1,3-dimethylimidazolium methylphosphite ([DMIM][MeHPO(3)]) are about 45 and 20 times higher than those of ethylene and propylene,...
متن کاملDimerization through the catalytic domain is essential for MEKK2 activation.
Mitogen-activated protein kinase (MAPK) cascades are the central components of the intracellular signaling networks that eukaryotic cells use to respond to a wide spectrum of extracellular stimuli. MAPKs are activated through a module consisting of a MAPK, a MAPK kinase (MKK), and a MKK kinase (MAP3K). Because of its unique position in the MAPK module, a MAP3K is crucial in relaying the upstrea...
متن کاملcomparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
15 صفحه اولDirect synthesis of nitroaryl acetylenes from acetylenes and nitroarenes via oxidative nucleophilic substitution of hydrogen.
Acetylenic carbanions add to nitroarenes (dinitrobenzenes, nitropyridines, etc.) to form σH-adducts that are subsequently oxidized by DDQ according to the oxidative nucleophilic substitution of hydrogen (ONSH) pathway to give nitroaryl acetylenes.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1961
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.34.892