The enolic form of ethyl acetoacetate as given below has :
A
9 sigma bonds and 1 pi-bond
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B
18 sigma bonds and 2 pi-bond
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C
16 sigma bonds and 1 pi-bond
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D
9 sigma bonds and 2 pi-bonds
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Solution
The correct option is B 18 sigma bonds and 2 pi-bond In enolic form of ethyl acetoacetate has 16 single bonds i.e., 16 sigma bond 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.