Describe a Sigmatropic Rearrangement

question 89

Multiple Choice

Describe a sigmatropic rearrangement.

• A)A sigma bond in the reactant has moved to a different location in the product,and the pi bonds have rearranged.
• B)The product contains a new ring,with two less sigma bonds,and two more pi bonds than the starting material.
• C)The product contains a new ring,with two more sigma bonds,and two less pi bonds than the starting material.
• D)The product contains a new ring,with one less sigma bond,and one more pi bond than the starting material.
• E)The product contains a new ring,with one more sigma bond,and one less pi bond than the starting material.

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