Ansa-Ferrocenealdehyde, obtained by formylation of a metathesis-derived ansa-ferrocene, was transformed into a conjugate with triazole and uracil with anticancer activity.

Diode lasers are coupled to a multi-mode fiber (with 100-400 μm core) using a reflector in the form of a regular pyramid. The optimization of the optical setup allows to couple 60%-90% of light into the fiber. The demonstrator achieves 3.5 W in the 100/125 μm fiber with 8 violet (405 nm) diodes, 5.5 W in the 100/125 μm fiber with 8 blue (445 nm) diodes, and 3.3 W in the 200/250 μm fiber with red (638 nm) diodes. The device can work with lasers emitting at many different wavelengths, including green (532 nm) frequency-doubled lasers. Our work was motivated by potential medical applications of these laser sources.

Total synthesis of levetiracetam via a one-pot dehydration/rearrangement of (R,E)-hept-4-en-3-ol carbamate to the corresponding allylamine derivative is reported.

This study estimates the influence of five Al 2 O 3 nanopowders on the growth of Scenedesmus quadricauda depending on the physical and chemical properties of the alumina nanoparticles and on the concentration of the nanopowder. The agglomeration and crystallisation levels of the alumina nanopowders as well as the zeta potential, the conductivity and the pH of nanopowderscontaining growth media are considered. The strongest algal growth inhibiting effect was accompanied by the highest degree of agglomeration and the highest crystallisation level as well as the smallest specific surface area.