The degree of eutrophication in fresh water ecosystems may be influenced by the forms of phosphorus (P) leached from agricultural systems. Physico-chemical fractionation of P in leachate from a grassland soil carried out over a two year period indicated that the majority of the P loss from the Lismore soil occurred in unreactive particulate (55–76%) P forms. P nuclear magnetic resonance analysi...

A catalytic atroposelective cycloaddition reaction between thioureas and ynals is developed. This features the first NHC-catalyzed addition of to acetylenic acylazolium intermediates eventually set up C?N axial chirality with excellent optical purities. The obtained axially chiral thiazine derivative products bear multiple functional groups are feasible for further transformations.

Lutein is a health promoting xanthophyll that may be extracted from marigold flowers. But the plant is known also for biosynthesis of phototoxic polythiophenes. Extracts of flowers of some Tagetes species grown in Belgorod (RF) T. erecta L. (cv. Gavaii) , T. patula L. (cv. Petit orange), T. tenuifolia Cav. (unknown cv.), and T. lucida Cav. were investigated by thin layer chromatography (TLC) an...