Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Free Tools

Explore our collection of AI-powered tools designed to boost your productivity.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing Schools Business

Features Free Tools Pricing Schools Business

10 Questions

1 Views

Chirality in Organic Compounds Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main purpose of using OsO4 in the hydroxylation reaction of alkenes?

To give a trans 1,2-diol
To catalyze the Pinacol-Pinacolone rearrangement
To convert alkenes to cis-diol (correct)
To dehydrate gem diols

Why is OsO4 used in catalytic amounts in the hydroxylation reaction of alkenes?

Because it is toxic, volatile, and expensive (correct)
To prevent over-oxidation of the glycol
To increase the reaction yield
To accelerate the reaction rate

What happens to most gem diols in aqueous solutions?

They remain stable
They form 1,2-diols
They undergo hydroxylation reactions
They dehydrate to form aldehydes or ketones (correct)

What is the Pinacol-Pinacolone rearrangement?

A method for converting 1,2-diols to carbonyl compounds (A) Signup and view all the answers

What does the Pinacol-Pinacolone rearrangement involve in terms of steps?

Protonation, carbocation formation, 1,2-rearrangement, deprotonation (B) Signup and view all the answers

Which compound is formed from the acid-catalyzed dehydration of glycols?

Ketone (D) Signup and view all the answers

What is the outcome of treating an epoxide with aqueous acid?

Formation of a trans 1,2-diol (A) Signup and view all the answers

Why should OsO4 be used in limited quantities in reactions?

To prevent over-oxidation of glycols (D) Signup and view all the answers

What is a major disadvantage of using KMnO4 for the oxidation of alkenes?

Potential over-oxidation (A) Signup and view all the answers

In the Pinacol-Pinacolone rearrangement mechanism, what role does carbocation formation play?

Facilitating a 1,2-rearrangement (D) Signup and view all the answers