EAS rules

EAS rules - fits here) Weak activators: alkyl groups Weak...

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wo simple rules in order to determine which Two simple rules in order to determine which group will dominate the directing effects 1. ortho-para directors always beat meta-directors . Strong activators always beat weak activators 2. Strong activators always beat weak activators The first rule always trumps the second rule. Ex. Weak activator vs. strong deactivator = weak activator wins (activators always beat deactivators)
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trong activators: l ne pair next to the ring St o g act ato s oep a et to te g Moderate activators: lone pair next to the ring, but tied up in
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Unformatted text preview: fits here) Weak activators: alkyl groups Weak deactivators: the halogens oderate deactivators: i bond next to an electronegative atom Moderate deactivators: pi bond next to an electronegative atom Strong deactivators: very powerful electron-withdrawing Strong activators Weak deactivators OH O NH 2 Moderate activators Moderate deactivators Weak activators Strong deactivators Strong Moderate eak ortho-para irectors Activators Weak Weak Moderate directors meta eactivators Strong directors Deactivators...
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This note was uploaded on 01/29/2012 for the course CHEM 234-54 taught by Professor Morrison during the Fall '09 term at UGA.

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EAS rules - fits here) Weak activators: alkyl groups Weak...

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