Herbicidal activity and biochemical characteristics of the natural product australol and preparation of an australol-based emulsifiable concentrate.

Background: Botanical herbicides play a crucial role in agricultural sustainability and environmental protection. This study elucidated the herbicidal activity and biochemical characteristics of australol, and successfully developed an australol-based emulsifiable concentrate (EC). The research lays the foundation for the development and application of novel botanical herbicides.

The metal tin promoted cascade reaction of ketones in aqueous media for the construction of 2-bromo-4-aryl-1,3-pentadiene.

A novel type of transformation was discovered serendipitously during the Barbier-type allenylation reaction of aromatic ketones promoted by the metal, tin, in aqueous media. Additionally, a series of new, highly functionalized 2-bromo-4-aryl-1,3-pentadienes could be obtained with good yields in this reaction. This cascade reaction shows the unique properties of the metal, tin.