Association Between Frailty and Head Impact Location After Ground-Level Fall in Older Adults.

Background: Mild traumatic brain injuries (TBIs) are highly prevalent in older adults, and ground-level falls are the most frequent mechanism of injury.

Objective: This study aimed to assess whether frailty was associated with head impact location among older patients who sustained a ground-level fall-related, mild TBI. The secondary objective was to measure the association between frailty and intracranial hemorrhages.

Fluorine in metal-catalyzed asymmetric transformations: the lightest halogen causing a massive effect.

This review aims at providing an overview of the most significant applications of fluorine-containing ligands reported in the literature starting from 2001 until mid-2021. The ligands are classified according to the nature of the donor atoms involved. This review highlights both metal-ligand interactions and the structure-reactivity relationships resulting from the presence of the fluorine atom or fluorine-containing substituents on chiral catalysts.

Convenient synthesis of tricyclic N(1)-C(2)-fused oxazino-indolones [Au(I)] catalyzed hydrocarboxylation of allenes.

A new [Au(I)] catalyzed intramolecular hydrocarboxylation of allenes is presented as a valuable synthetic route to oxazino-indolones. The use of 3,5-(CF)-CH-ImPyAuSbF as the optimal catalyst (5 mol%) was necessary to guarantee (i) wide tolerance of functional groups, (ii) mild reaction conditions (r.t.

-Symmetric 2,2'-Bipyridine-α,α'-1-adamantyl-diol Ligand: Bulky Iron Complexes in Asymmetric Catalysis.

The synthesis of a chiral 2,2'-bipyridine-α,α'-1-adamantyl-diol ligand was achieved starting from commercially available materials. The bulky ligand was synthesized in three steps in 40% overall yield with stereoselectivities of 98% de and >99.5% ee for the , enantiomer.

2,2'-Bipyridine-α,α'-trifluoromethyl-diol ligand: synthesis and application in the asymmetric EtZn alkylation of aldehydes.

A chiral 2,2'-bipyridine ligand (1) bearing α,α'-trifluoromethyl-alcohols at 6,6'-positions was designed in five steps affording either the , or , enantiomer with excellent stereoselectivities, 97% de, >99% ee and >99.5% de, >99.5% ee, respectively.

Corrigenda: A biodiversity hotspot for Microgastrinae (Hymenoptera, Braconidae) in North America: annotated species checklist for Ottawa, Canada.

[This corrects the article DOI: 10.3897/zookeys.633.

Asymmetric Fe-Catalyzed Thia-Michael Addition Reaction to α,β-Unsaturated Oxazolidin-2-one Derivatives.

A highly enantioselective Fe-catalyzed thia-Michael addition to α,β-unsaturated carbonyl derivatives was developed. The scope of the reaction was demonstrated with a selection of aromatic, heterocyclic and aliphatic thiols, and various Michael acceptors. The corresponding β-thioethers were obtained in good to excellent yields (up to 98%) and moderate to excellent enantioselectivities (up to 96:4 er).