Rearrangement to Electron Deficient Carbon <ul><li>Migratory aptitude : Ph> R, H </li></ul><ul><li>The migratory aptitude of phenyl group increases with electron donating groups </li></ul>Generation of Carbonium ion
<ul><li>Benzilic acid rearrangement -Diketones undergo a rearrangement when treated with hydroxide ion, giving -hydroxyacids. </li></ul>
Rearrangement to Electron-deficient Nitrogen <ul><li>Hofmann rearrangement- A carboxylic acid amide is treated with sodium hypobromite, or bromine in alkali. The N-bromo-amide is formed and reacts with the base to give its conjugate base within which rearrangement occurs. </li></ul>
Migration to Electron-Deficient Oxygen- The Baeyer-Villiger Oxidation
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