For 10 points, name these organometallic reagents allowing addition of R groups to reactive carbon centers, typically consisting of magnesium bromide, named for the French winner of the 1912 Nobel in Chemistry.
The first practical synthesis of silanes by Kipping in 1904 saw the reaction of these compounds with things like silicon (IV) chloride as more successful than the related Barry process employing boron. Common lab experiments producing them often involve crushing fresh reagent to eliminate oxidized surfaces or using Rieke metals and must occur under dehydrated conditions, such as in (*) diethyl ether or THF, to prevent breakup of the ternary complex these compounds form in the Shlenck equilibrium. Reacting one equivalent of these with carbon dioxide yields a carboxylic acid, and their initial synthesis requires an alkyl halide and magnesium metal. For 10 points, name these organometallic reagents allowing addition of R groups to reactive carbon centers, typically consisting of magnesium bromide, named for the French winner of the 1912 Nobel in Chemistry.
The first practical synthesis of silanes by Kipping in 1904 saw the reaction of these compounds with things like silicon (IV) chloride as more successful than the related Barry process employing boron.
Grignard reagents [prompt on organometallic reagents but do not accept things like organolithium]  7. The fifth of these pieces by this composer 