Which of the following heterocyclic compounds is not aromatic?
Correct answer: D. Piperidine
- A. Pyridine
- B. Payroll
- C. Furan
- D. Piperidine
Explanation
Piperidine is an organic compound with the molecular formula (CH2)5NH. This heterocyclic amine consists of a six-membered ring containing five methylene bridges (-CH2-) and one amine bridge (-NH-). It is a colorless liquid with an odor described as objectionable, typical of amines.
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About Benzene and Aromatic Compounds
Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.
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