A Certain Free Radical Chlorination Reaction of 2,3-Dimethylbutane Leads to the Production

question 71

Multiple Choice

A certain free radical chlorination reaction of 2,3-dimethylbutane leads to the production of two major monochlorinated products 1-chloro-2,3-dimethylbutane and 2-chloro-2,3-dimethylbutane. When run through a Gas chromatograph, it was determined that the product distribution was 51.7% 1-chloro-2,3-dimethylbutane and 48.3% 2-chloro-2,3-dimethylbutane. If we assign the primary H's a reactivity of 1.0, what is the relative reactivity of the tertiary H's?

• A) 5.0 times more reactive
• B) 5.1 times more reactive
• C) 4.6 times more reactive
• D) 5.6 times more reactive
• E) 3.0 times more reactive

---

Definitions:

O-linked Glycosidic Bond

An O-linked glycosidic bond is a type of covalent bond that connects a sugar molecule to another molecule via an oxygen atom.

Merrifeld Synthesis

A method for synthesizing peptides and proteins using a solid-phase synthesis technique.

Tripeptide

A peptide made up of three amino acids linked by peptide bonds, integral to various biological functions.

Protecting Groups

Chemical groups attached to a molecule's sensitive functional groups to block them from unwanted reactions during synthesis steps, to be removed later to reveal the original functional group.