Surface engineering of zinc plate by self-growth three-dimensional-interconnected zinc silicate nanosheets effectively guiding the deposition of zinc ion for aqueous Zn metal battery.

Among battery technologies, aqueous zinc ion batteries (AZIBs) have hit between the eyes in the next generation of extensive energy storage devices due to their outstanding superiority. The main problem that currently restricts the development of AZIBs is how to obtain stable Zn anodes. In this study, taking the improvement of a series of problems caused by the physically attached artificial interfacial layer on Zn anode as a starting point, a nanosheet morphology of ZnSiO (denoted as ZnSi) is constructed by self-growth on Zn foil (Zn@ZnSi) by a simple hydrothermal reaction.

Catalytic Enantioselective Synthesis of Difluoromethylated Tetrasubstituted Stereocenters in Isoindolones Enabled by a Multiple-Fluorine System.

A poly trifluoromethylated chiral spirocyclic phosphoric acid was developed and employed with hexafluoroisoproyl alcohol (HFIP) to render the catalytic asymmetric Mukaiyama-Mannich reaction of difluoroenoxysilanes with formed ketimines. This unique multiple-fluorine system provides rapid access to difluoromethylated tetrasubstituted stereocenters in isoindolones with wide substrate scope under mild conditions. Further synthetic transformations to enantioenriched CFH-isoindolones and CF-decorated fused isoindolones were also implemented with good efficiency.

Catalytic alkylation of unactivated C(sp)-H bonds for C(sp)-C(sp) bond formation.

The construction of carbon-carbon bonds is a central tenet of modern synthetic chemistry. Metal-catalyzed C-H functionalization can serve as a particularly powerful tool for achieving carbon-carbon bond formation. This review summarizes the early adventures and recent advancements in catalytic transformation of unactivated C(sp3)-H bonds into C(sp3)-C(sp3) bonds.

Construction of Chiral β-Trifluoromethyl Alcohols Enabled by Catalytic Enantioselective Aldol-Type Reaction of CFCHN.

A zinc-/quinine-mediated enantioselective Aldol-type reaction of trifluorodiazoethane (CFCHN) with various aldehydes is described. This study demonstrated the feasibility of utilizing CFCHN as an effective hard nucleophile in catalytic asymmetric transformations. Furthermore, the synthetic utility of this protocol is exemplified by the construction of a diverse set of chiral β-trifluoromethylated alcohols, including a valuable HDAC inhibitor precursor.