Structure of grignard reagents and organolithium compounds

Salt and Polar Effects in the Grignard Reaction. The Reaction of Arylmagnesium Reagents with Benzonitrile

“…An equivalent amount of dioxane plus a 1% excess was slowly added to the Grignard and then stirred overnight. The ether was then replaced by THF by distillation according to the method of Storfer.6 15. Magnesium Bromide in THF.-1,2-Dibromoethane was added to magnesium turnings in THF using the high-vacuum system.…”

Mixed AggregAte (MAA): A Single Concept for All Dipolar Organometallic Aggregates. 1. Structural Data

“…Main efforts in this field, initiated in the 1960s, consisted of registering 1 H, 13 C, 7 Li, ,− and then later on 6 Li − magnetic resonance spectra of organolithium reactants in deuterated solvents. Compared with the crystallographic approach, the NMR technique is supposed to afford a more representative picture of the lithio reactant structure when engaged in a reaction, since the analyses are made in solution.…”

“…Although alkenyllithiums were the object of observations from the early 1960s, , a clear and precise description of their homoaggregation only began in the mid-1980s . Thus, vinyllithium crystallized with 1 equiv of tetrahydrofuran as a single tetrasolvated cubic tetramer of formula [VinylLi] 4 ·4THF (Scheme , left).…”