I am curious to know when one would want to use a Heck Rxn. Vs. a Suzuki Rxn. Vs. using a Gilman reagent?
From my understanding a Heck Rxn is used when wanting to link two sp2 carbons. Same for a Suzuki Rxn. A Gilman reagent can add an alkyl group to an aryl, vinyllic or alkyl halide ( if I'm correct ).
My confusion is understanding what the differences in these reactions is and when you would want to apply one vs another in a given circumstance?