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Is the 4H-Pyran Cation aromatic?

As noted by Nicolau in the comments, this is really the pyrylium ion. It is usually drawn with a double bond to the oxygen atom, which then formally takes the positive charge. This allows an extra pi ...
Oscar Lanzi's user avatar
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1 vote

Why is chlorine atom in chlorobenzene deactivating the benzene ring when it has M+ effect, which is stronger than I- in other cases?

Think about the lone pairs of halides. In case of fluorine, it is 2p-orbitals, in case of chlorine, it is 3p-orbitals and so on. Benzene, being an aromatic compound, interacts with electron-donating ...
jona173's user avatar
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