MolSynapsequestion bank

MolSynapse / Question bank / Organic Reaction Mechanisms II: Electrophilic and Radical Reactions / Electrophilic aromatic substitution: mechanism and directing effects

JEE Main levelSingle correct optionDifficulty 2 of 3o2125

Benzene reacts with 1-chloropropane in the presence of anhydrous $AlCl X_{3}$ . The major product is

An-propylbenzene
Bisopropylbenzene (cumene)
Cpropene
D1,3-dipropylbenzene

Answer: B

The primary propyl carbocation (or its

AlCl X_{3}

complex) undergoes a 1,2-hydride shift to the more stable secondary isopropyl cation. This cation alkylates the ring, so cumene is the major product.

Practice Organic Reaction Mechanisms II: Electrophilic and Radical Reactions More on Electrophilic aromatic substitution: mechanism and directing effects

Previous questionNext question

More questions on Electrophilic aromatic substitution: mechanism and directing effects

Heating nitrobenzene with concentrated HNO3 and concentrated H2SO4 gives mainly JEE Main level
Which of the following correctly gives the decreasing order of rate of nitration? JEE Main level
Anisole is treated with Br2 in ethanoic acid (no catalyst). The major product is JEE Main level
Benzoic acid is treated with Br2 and FeBr3. The major product is JEE Main level
Aniline does not undergo Friedel-Crafts alkylation or acylation because JEE Main level
Halogens are deactivating yet ortho/para directing in electrophilic aromatic substitution because JEE Main level