Why Does Proline Not Give a Positive Test with Ninhydrin

question 23

Multiple Choice

Why does proline not give a positive test with ninhydrin?

• A) The secondary amine of proline is too weak a nucleophile to add to ninhydrin.
• B) The of the ammonium in proline (10.6) is too high to react with ninhydrin.
• C) Hydrolysis of the second imine in the reaction mechanism cannot occur with proline.
• D) The first imine cannot form in the reaction between proline and ninhydrin.
• E) The second imine formed by decarboxylation in the mechanism is too unstable to form.

---

Definitions:

Goals

Specific, measurable objectives that an individual or organization plans to achieve within a set timeframe.

Vision Statement

A future-oriented declaration of an organization's goals and aspirations, intended to guide its internal decision-making.

Strategic Planning

A systematic process of envisioning a desired future and translating this vision into broadly defined goals or objectives and a sequence of steps to achieve them.

Chief Executive Officer

The highest-ranking executive in a company or organization, responsible for making major corporate decisions and managing overall operations.