We are asked to provide the alkyne starting material A, intermediate organic product B, and identify the reagents.
We are only given the final product and the reactants so we will have to work backward.
We have a cyclopropane product so we can use Cyclopropanation using carbenes to get to that. The general reaction is shown below.
Provide the alkyne starting material A, intermediate organic product B, and identify the reagents.
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