10 Questions
What is the main purpose of using OsO4 in the hydroxylation reaction of alkenes?
To convert alkenes to cis-diol
Why is OsO4 used in catalytic amounts in the hydroxylation reaction of alkenes?
Because it is toxic, volatile, and expensive
What happens to most gem diols in aqueous solutions?
They dehydrate to form aldehydes or ketones
What is the Pinacol-Pinacolone rearrangement?
A method for converting 1,2-diols to carbonyl compounds
What does the Pinacol-Pinacolone rearrangement involve in terms of steps?
Protonation, carbocation formation, 1,2-rearrangement, deprotonation
Which compound is formed from the acid-catalyzed dehydration of glycols?
Ketone
What is the outcome of treating an epoxide with aqueous acid?
Formation of a trans 1,2-diol
Why should OsO4 be used in limited quantities in reactions?
To prevent over-oxidation of glycols
What is a major disadvantage of using KMnO4 for the oxidation of alkenes?
Potential over-oxidation
In the Pinacol-Pinacolone rearrangement mechanism, what role does carbocation formation play?
Facilitating a 1,2-rearrangement
Test your understanding of chirality in organic compounds, including molecules with multiple asymmetric carbons and those without any chiral centers. Explore the concept of achiral and chiral compounds with and without a plane of symmetry.
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