This contribution reviews some general aspects of the quaternary iminium protoberberine
alkaloids. The alkaloids represent a very extensive group of secondary metabolites with …

In the present review we describe the emerging tendency for creating target-oriented
analytical approaches designed to solve important chemical tasks by using a combination of …

The selective modification of nitrogen heteroaromatics enables the development of new
chemical tools and accelerates drug discovery. While methods that focus on expanding or …

The state of the art and recent developments in application of nuclear magnetic resonance
(NMR) for structure elucidation and identification of small organic molecules are discussed …

Sulfurized polyacrylonitrile (S-cPAN) has been recognized as a particularly promising
cathode material for lithium–sulfur (Li–S) batteries due to its ultra-stable cycling performance …

The design, synthesis, and both experimental and theoretical studies of several novel 9-
(acylimino)-and 9-(sulfonylimino) pyronin derivatives containing either an oxygen or a …

Laboratories around the world are challenged by the task of either verifying chemical
structures or elucidating the chemical structures of unknowns; each structure verified or …

The role of various factors (structure, solvent, and relativistic treatment) was evaluated for
square-planar 4d and 5d transition-metal complexes. The DFT method for calculating the …

Herein we report the development of an oxidative amination process for the streamlined
synthesis of pyridones from cyclopentenones. Cyclopentenone building blocks can undergo …

There is a wide range of potential applications of inorganic compounds, and metal
coordination complexes in particular, in medicine but progress is hampered by a lack of …