Straightforward synthesis of chiral sulfonate-based ionic liquids from amino alcohols for chiral recognition.

New sulfonate-based chiral salts were prepared from amino alcohols and sodium hydroxymethanesulfonate, vinyl sulfonate, or sultone. The synthesis started with different amino acids from the chiral pool and gave the desired products in just four steps. After cation metathesis, the salts were explored as chiral solvating agents (CSAs) in NMR studies.

Influencing the froth flotation of LiAlO and melilite solid solution with ionic liquids.

In the present work experiments for single mineral flotation against LiAlO and melilite s.s. were carried out for seven ionic liquids (ILs).

Intramolecular Phosphine-Promoted Knoevenagel Based Redox-Reaction.

A Knoevenagel based redox-reaction promoted by intramolecular phosphine sources is presented for the first time. The influence of different diketones, aldehydes, bases and acids was investigated. The effects of different substituents were evaluated based on their electronical influence on the diketone structure.

Improvement of the froth flotation of LiAlO and melilite solid solution via pre-functionalization.

In this work froth flotation studies with LiAlO (lithium-containing phase) and Melilite solid solution (gangue phase) are presented. The system was optimized with standard collectors and with compounds so far not applied as collectors. Furthermore, the principle of self-assembled monolayers was introduced to a froth flotation process for the first time resulting in excellent yields and selectivities.