Cover Picture: Transition Metal‐free gem ‐difluorocyclopropanation of Alkenes with CF 3 SiMe 3 −NaI System: a Recipe for Electron‐deficient Substrates (Adv. Synth. Catal. 21/2018)

A synthesis of γ-trifluoromethyl α,β-unsaturated γ-butyrolactones using CF(3)SiMe(3) as a trifluoromethylating agent.

A general synthesis of γ-trifluoromethyl α,β-unsaturated γ-butyrolactones is described. The fluoride-catalyzed nucleophilic addition of a trifluoromethyl (CF3) group generated from (trifluoromethyl)trimethylsilane (CF3SiMe3, Ruppert-Prakash reagent) to a masked maleic anhydride 1 (cyclopentadiene-maleic anhydride adduct) provides the corresponding adducts 2 with high stereoselectivity. The γ-tr...

Cover for Volume.13, No.3

Cover Picture: Nonlinear d10-ML2 Transition-Metal Complexes (ChemistryOpen 3/2013)

COVER PICTURE Lando P. Wolters and F. Matthias Bickelhaupt* The cover picture illustrates the authors' quantum chemical finding that π electrons can significantly bend otherwise linear d(10)-ML2 complexes through backbonding. The foreground features a typical series of linear and nonlinear computed equilibrium geometries, while, in the background, one discerns quantitative numerical output of t...

AgOC(CF(3))(3): an alternative and efficient reagent for preparing transition metal-NHC-carbene complexes.

AgOC(CF(3))(3), a soluble source, was found to be a convenient reagent for the one-pot preparation of Ag-NHC and M-NHC complexes starting from imidazoliums (M = Au, Ir, Pd and Ru).

Contents: (Adv. Sci. 3/2017)