Question

What product would you expect from the reaction of 1-phenyl-2-butene with NBS? Explain.

1-phenyl 2-butene

Short answer

Formation of the desired product

Step-by-step solution

Step-by-Step SolutionStep 1: 1-phenyl 2-butene

1-phenyl 2-butene reacts with NBS which undergoes radical substitution to form 1-Bromo-1-phenyl-2-butene as the major product.

Product formed

The product 1-Bromo-1-phenyl-2-butene is formed because the intermediate free radical giving raise to this product is highly stabilized due to resonance.

Formation of the desired product