Provide the structures of the three possible starting materials for the following reaction.  One has a six-membered ring, one has a five-membered ring, and one has a four-membered ring.  Put them in the appropriately labeled boxes.  Your starting materials should all be hydrocarbons (i.e., no atoms other than C and H). (Note that in all cases, there is also a CH2=O byproduct which you should not draw.)

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A: The solution of the question is given below:

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Q: OH OH Phph Ph CrO3 H₂SO4 SOCI₂ een H HN(CH,CH3)2

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A: Please see attachment below for curved arrow mechanism.Explanation:Step 1: Step 2: Step 3: Step 4:

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A: Approach to solving the question:       Detailed explanation: Examples: Key references:

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Designing a Synthesis

Organic synthesis is a branch of chemical synthesis that involves the planned construction of organic compounds/molecules from smaller units that possess functional groups. Friedrich Wöhler was the first scientist who designed the synthesis of an organic compound, urea from inorganic starting materials silver cyanate with ammonium chloride via a simple, one-step synthesis.