Question: please help really struggling on this 2. Answer ALL parts a) The key step in the synthesis of a welwitindoline natural product used an aryne

please help really struggling on this

2. Answer ALL parts a) The key step in the synthesis of a welwitindoline natural product used an aryne reactive intermediate to form compound I. tBuOH/THFNaNH2 welwitindolinone natural product i) Provide a suitable mechanism for this key transformation [5] ii) How could you prove that an aryne intermediate is formed under these reaction conditions. [5]

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