Question

4. Predict the structure of all species or reagents in red. Clearly indicate stereochemistry when relevant.

5. The Wolff-Kishner reduction is a method to transform ketones into alkanes. An example is provided below. However, all steps and all electron-pushing arrows are not clearly illustrated in this mechanism. Propose a detailed mechanism with all electron-pushing arrows for both steps of the Wolff-Kishner reduction. Notice the first step is carried out in the absence of acid or base – it may involve formation of zwitterion.

Answer 1

Summery: In first question first we have to know the Reagent role. mCPBA are the epoxide forming agent With Conselted step mechanisum. E alkene give trans epoxide. Followed by opening of epoxide in an acidic condition followed by carbocation stability.

In secound question genrally it is named reaction of conversion of carbonyl qroup into alkane. Base catalysed reaction form an carboanion intermideate by losse of N2.