The preparation of substituted aminooxazoles and aminoimidazoles from α-arylamides and α-aminoamides through triflic anhydride-mediated amide activation is reported. These reactions proceed via the intermediacy of nitrilium adducts and feature N-oxide-promoted umpolung of the α-position of amides as well as a mechanistically intriguing sequence that results in sulfonyl migration from nitrogen t...

excitation of native fluctuations during thermal unfolding simulations: horse heart cytochrome c, a case study. Biophys. Conformational fluctuations and electronic properties in myoglobin. A. Di Nola. Extended molecular dynamics simulation of the carbon monoxide migration in sperm whale myoglobin. Biophys. A. Di Nola. Molecular dynamics simulations of sperm whale myoglobin: effects of mutations...

BACKGROUND Selective pressures that occur during long-distance migration can influence morphological traits across a range of taxa. In flying insects, selection should favour individuals that have wing morphologies that increase energy efficiency and survival. In monarch butterflies, differences in wing morphology between migratory and resident populations suggest that migratory populations hav...

Migration and quality of redistribution of population across country is one of the main factors that planners take into account to control population and guide its movements to economic poles. Scientific recognition of migration phenomenon is important for managing and policy making in the country. These movements change migration pattern, in a way that along with increase in population and the...

Sea level rise alters coastal carbon cycling by driving the rapid migration of ecosystems, salinization freshwater systems, and replacement terrestrial forests with tidal wetlands. Wetland soils accumulate (C) at faster rates than soils, implying that sea may lead to enhanced accumulation. Here, we show stored in tree biomass greatly exceeds adjacent marsh so reduces total stocks ?50% less 100 ...