Q50Ec - Organic Chemistry (Mcmurry)

Question

Question: How would you carry out the following transformations? Tell what

reagents you would use in each case.

Step-by-Step Solution

Answer

Answer

The reagent used in the reaction is $C{H}_{3}Cl, KOH$:

Step 1: Carbenes

A carbene is intermediate, and these are highly reactive. Some of the examples of carbenes are methylene, phenylcarbene, dialkylcarbene etc. 

Step 2: Types of carbenes

Carbenes are of two types: one is singlet carbine, and the other is triplet carbine. Singlet carbene contains paired electrons in one empty orbital. Triplet carbene contains two unpaired electrons in two empty orbitals.

Step 3: Reagent used in the reaction

The formation of a 1,1 -dichlorocyclopropane ring from the double bonds of an alkene can be performed with the formation of a carbine intermediate. Carbene intermediate can be formed with the help of a reagent $C{H}_{3}Cl, KOH$. 

Hence, the reagent used in the reaction is $C{H}_{3}Cl, KOH$: