Two for the price of one: Sulfamic acid serves not only as a nitrogen source but also as an in situ activator of hydroxy groups in the first direct iridium‐catalyzed synthesis of primary allylic amines from allylic alcohols (see scheme; cod=cycloocta‐1,5‐diene). The reaction is catalyzed by a commercially available iridium complex and a phosphoramidite‐based bidentate phosphorus–olefin ligand.

Catalytic reduction of alpha-substituted acetophenones under conditions involving asymmetric transfer hydrogenation in water is described. The reaction is conducted in water and open to air, and formic acid is used as reductant.

Nicht nur als Stickstoffquelle, sondern auch als In‐situ‐Hydroxyaktivator wirkt Sulfaminsäure bei der direkten Ir‐katalysierten Synthese von Allylaminen aus Allylalkoholen (siehe Schema; cod=Cyclooctadien). Die Reaktion wird durch einen käuflichen Iridiumkomplex und einen zweizähnigen, auf Phosphoramiditen basierenden Phosphor‐Olefin‐Liganden katalysiert.

A simple and very efficient chiral aqua iridium(III) diamine complex leads to excellent enantioselectivities in the asymmetric transfer hydrogenation of various α‐cyano and α‐nitro ketones. The catalyst provides the ortho‐substituted aromatic alcohols with especially high ee values. The diamine ligands can be used directly as chiral ligands; conversion into the corresponding sulfamide is not necessary.

A mild catalytic asymmetric transfer hydrogenation of beta,beta-disubstituted nitroalkenes is reported. Formic acid is used as a reductant in combination with an Ir catalyst. The reaction is conducted in water at low pH and open to air to give adducts in preparatively useful yield and selectivity.