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Heck reaction: 1. Attack of metal on alkenyl halide to yield alkenylmetal halide 2. alkene complexes with the metal 3. alkene inserts itself into carbon-metal bond, forming new C-C carbon linkage 4. eliminatiom of HX in an E2-like manner gives diene product and frees metal catalyst.
Rate-Determining Step. the slowest step of a reaction mechanism of more than one elementary step. How to study reaction mechanisms: 1. do a series of experiments to establish initial rates. 2. analyze the data to determine the rate constant and overall order of reaction. 3. propose a reaction mechanism in terms of logical elementary steps.
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Benzilic Acid Rearrangement. The benzilic acid rearrangement involves conversion of a 1,2-diketone into a carboxylic acid. The conditions are deceptively simple, hydroxide followed by an acid quench, and lead to the migration of a benzene ring. This mechanism is relatively straightforward.
Oct 17, 2011 · Introduction to Rearrangement Reactions. Reactions that involve a carbocation intermediate may be accompanied by rearrangements where a pair of electrons from a C-H or C-C bond migrates toward the carbocation, resulting in breakage and formation of a C-H or C-C bond, and formation of a new carbocation. The new carbocation (generally more stable ...
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Jan 23, 2023 · A rearrangement reaction is a broad class of organic reactions where the carbon skeleton of a molecule is rearranged to give a structural isomer of the original molecule. Often a substituent moves from one atom to another atom in the same molecule.
