Triethylboron determination

A rapid method for determining quantitatively the water content of a large variety of hydrated salts depends upon measuring the volume of ethane liberated when the compound is treated with triethylboron in the presence of small amounts of pivalic acid. One ethyl group is removed per hydrogen according to the equation 217... 

Again coordination of the boron with the carboxylic acid nucleophile activates the R group for cleavage, and labilizes the proton that is involved in rate-determining attack. In agreement with this concept very weak acids, with properly placed nucleophiles, react with triethylboron, e.g., 1,3-diketones, acetamide, 2-pyridone, pyrollidone, and 8-hydroxyquinoline. 

The bimodal MWD has been determined for polyethylene samples synthesised on the Cr/AlP04 catalytic system in isobutene, in the presence of triethylboron as a... 

Boron.—Reactions of boron trichloride with aromatic amines may proceed by formation of the Cl3B,NH2R adduct and then by hydrogen chloride elimination to give ClaB=NHR en route to the ultimate product (CIB—NR),. The mechanism of these reactions has been probed by isolation and characterization of intermediates, and stoicheiometric and kinetic studies -the kinetics can be followed by monitoring the evolution of hydrogen chloride. Photochemical reaction of triethylboron with iodine in cyclohexane takes place by a free-radical mechanism, indicated by the determined rate law. ... 

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