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9.36 The Bohlmann-Rahntz pyridine synthesis cyclizes an open-chain intermediate under acidic conditions, to form an aromatic ring. Propose a reasonable mechanism for the ring-closing

9.36 The Bohlmann-Rahntz pyridine synthesis cyclizes an open-chain intermediate under acidic conditions, to form an aromatic ring. Propose a reasonable mechanism for the ring-closing and aromatization steps. HO NH :OH ss HO + HO

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