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Micellar effects upon the reaction of hydroxide ion with 2-phenoxyquinoxaline

✍ Scribed by Angela Cuenca; Cesidio Bruno

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
538 KB
Volume
26
Category
Article
ISSN
0538-8066

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✦ Synopsis

Cationic micelles of alkyltrimethylammonium chloride and bromide (alkyl = n -C12H25, n-C14H29, and n-C16H33) catalyze and anionic micelles of sodium dodecyl sulfate inhibit the reaction of hydroxide ion with 2-phenoxyquinoxaline (1). Inert anions such as chloride, nitrate, mesylate, and n-butanosulfonate inhibit the reaction in CTABr by competing with OHat the micellar surface. The overall micellar effects on rate in cationic micelles and dilute electrolyte can be treated quantitatively in terms of the pseudo-phase ion-exchange model. The determined second-order rate constants in the micellar pseudo-phase are smaller than the second-order constants in water.

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