Question

give reaction mechanism of cyclohexenone withh gilman reagent.

Answer 1

cyclohexenone is a $\alpha\beta$ unsaturated carbonyl compound and when any organometallic compound like gillmann reagent reacts then here two types of addiction is possible

1,2 addition

1,4 addition

In gillmann reagent when any low negative charge organometallic compound reacts then it will give 1,4 addition as major product and 1,2 addition as minor product.

With RMgX 1,2 addition will be major product and 1,4 addition will be minor product.