Question

The enolic form of ethyl acetoacetate as below has

• A. 18 sigma bonds and 2 pi-bonds
• B. 16 sigma bonds and 1 pi-bond
• C. 9 sigma bonds and 2 pi-bonds
• D. 9 sigma bonds and 1 pi-bond.

Answer 1

The correct option is A

18 sigma bonds and 2 pi-bonds

The enolic form of ethyl acetoacetate has 16 single bonds i.e. 16 $\sigma$ - bonds and 2 double bonds i.e. 2 $\sigma$ - bonds and $2\pi$ - bonds.

Hence, the given structure has 18 $\sigma$ - bonds and $2\pi$- bonds.