Which of the Following Statements About Carbon Migrations Is (Are)correct

question 11

Multiple Choice

Which of the following statements about carbon migrations is (are) correct?

• A)Carbon migrations never occur by a sigmatropic rearrangement.
• B)Under thermal conditions, a [1,3] carbon migration that occurs suprafacially must also occur with inversion of configuration at the migrating carbon.
• C)Under thermal conditions, a [1,5] carbon migration that occurs suprafacially must also occur with inversion of configuration at the migrating carbon.
• D)Under thermal conditions, a carbon migration that occurs suprafacially must occur with inversion no matter the system's symmetry.
• E)B, C, and D

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