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Despite the low reactivity of the tetrafluoroborate anion in general, BF − 4 serves as a fluorine source to deliver an equivalent of fluoride. [2] The Balz–Schiemann reaction for the synthesis of aryl fluorides is the best known example of such a reaction. [3]
Trimethyloxonium tetrafluoroborate is the organic compound with the formula [(CH 3) 3 O] + [BF 4] −. (It is sometimes called "Meerwein's salt" after Hans Meerwein. [1] [a]) This salt is a strong methylating agent, being a synthetic equivalent of CH + 3.
Sodium tetrafluoroborate is an inorganic compound with formula NaBF 4.It is a salt that forms colorless or white rhombic crystals and is soluble in water (108 g/100 mL) but less soluble in organic solvents.
The diazo group (N 2) can be replaced by many other groups, usually anions, giving a variety of substituted phenyl derivatives: . C 6 H 5 N 2 + + Nu − → C 6 H 5 Nu + N 2. These transformations are associated with many named reactions including the Schiemann reaction, Sandmeyer reaction, and Gomberg-Bachmann reaction.
Ferrocenium tetrafluoroborate is an organometallic compound with the formula [Fe(C 5 H 5) 2]BF 4.This salt is composed of the cation [Fe(C 5 H 5) 2] + and the tetrafluoroborate anion (BF −
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Triethyloxonium tetrafluoroborate is the organic oxonium compound with the formula [(CH 3 CH 2) 3 O] + [BF 4] −.It is often called Meerwein's reagent or Meerwein's salt after its discoverer Hans Meerwein.
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