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Provide the structure (a single resonance contributor) of the key intermediate in the following reaction
.
Q1: What are the relative positions of the
Q21: What is the major organic product obtained
Q25: What is the major organic product obtained
Q27: Which of the following sets of substituents
Q34: What is the IUPAC name of the
Q45: What is the major organic product obtained
Q50: What is the index of hydrogen deficiency
Q64: What is the major organic product obtained
Q69: What is the major organic product obtained
Q70: How many hydrogen atoms are there in