Among the following compounds, the one that is non-aromatic, is · ABC26OR0750
Subject: Organic Chemistry · Chapter: Stereochemistry · Topic: Stereochemistry – General · Exam: GATE 2000-2022 · Marks: 2 · Difficulty: Easy
Among the following compounds, the one that is non-aromatic, is
(a)
(b)
(c)
(d)
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
(a) Cyclooctatetraene (8π) is not planar. It adopts a tub shape, so it is non-aromatic.
(b) Benzyne keeps the aromatic 6π sextet; its extra π bond lies in the ring plane, so it is aromatic. (c) Cyclobutadiene (4π, planar) is antiaromatic. (d) 1,6-Methano[10]annulene (10π) is aromatic.
The non-aromatic compound is cyclooctatetraene, option (a).
Study loop for Stereochemistry