Question

The enolic form of ethyl acetoacetate as below has: [2015]
(a) 16 sigma bonds and 1 pi - bond
(b) 9 sigma bonds and 2 pi - bonds
(c) 9 sigma bonds and 1 pi - bond
(d) 18 sigma bonds and 2 pi - bonds

Answer 1

The given compound has 18 sigma bonds and 2 pi - bonds.

Option (D) is correct.

Explanation:

• Ethyl acetoacetate (EAA) is an organic compound and  is known as the ethyl ester of acetoacetic acid.
• It is commonly used as a chemical intermediate in the production of amino acids, analgesics, antibiotics, and even vitamin B1.
• The compound is also used in the manufacture of dyes, inks, perfumes, yellow paint pigments and plastics.
• In an enolic form of ethyl acetoacetate there are 16 single bonds, which means 16 sigma bonds and two double bonds, ie. two sigma bonds and two pi bonds.

Hence, the given compound has 18 sigma bonds and 2 pi - bonds.

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