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electrophile

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electrophile

Atom or molecule that in a chemical reaction seeks an atom or molecule containing an electron pair available for bonding or the negative end of a polar molecule (see covalent bond; electric dipole). In the Lewis electron theory (see acid-base theory) advanced by the U.S. chemist Gilbert Lewis (1875–1946) in 1923, electrophiles are by definition Lewis acids. Examples include the hydronium ion (H3O+), boron trifluoride (BF3), and the halogens fluorine, chlorine, bromine, and iodine in molecular form. See also acid; nucleophile.

electrophile [i′lek·trō‚fīl]
(physical chemistry)
An electron-deficient ion or molecule that takes part in an electrophilic process.
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gamma-tocopherol traps mutagenic electrophiles such as NO(X) and complements alpha-tocopherol: physiological implications.
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Considering that quinone methides are the resonance hybrids between the quinoid and benzenoid structures, and their high reactivity to electrophiles and nucleophiles, it is evident that the polycondensation mechanism in all catalytic conditions can be explained by their participation.
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Phthalocyanines can react with electrophiles like the isothiazolinones, and deactivate them.
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