Edited Invalid date
8 -- Part 2: REACTIONS OF ALKENES
Grignard and organolithium reagents are strong bases and strong nucleophiles.
They don't displace as easily as acetylide ion do.
Whenever a molecule of reagent formed, it would react with a molecule of the starting material, so it would be impossible to form Grignard reagents from alkyl halides.
The only thing that would be formed is a product.
The yield of many Grignard reactions is hurt by the side reaction ofcoupling.
The carbanion attacked the alkyl halide and the carbanion was present.
This isn't the actual mechanism because dialkylcuprates also couple with vinyl halides and aryl halides.
The mechanism is dependent on the structure of the cuprate and the alkyl halide.
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