Alkyne Chemistry Reactions Drill and Practice
Enhance your understanding of alkyne chemistry reactions with this interactive drill and practice session. Explore various reactions such as ozonolysis, stereochemistry, Markovnikoff addition, carbonyl formation, and more. Test your knowledge with engaging exercises and learn from Nobel Prize-winning chemists in this comprehensive study guide.
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Presentation Transcript
Drill and practice: Alkyne chemistry part 2 Almost all reactions of alkynes are classified as . additions What is the one reaction of alkynes that isn t an addition ? ozonolysis Speaking of ozonolysis, what functional group do the product(s) of an ozonolysis belong to? Carboxylic acids What is/are the specific product(s) of the reaction: OH OH Zn/H+ O3 + neat O O
Drill and practice: Alkyne chemistry part 2 (continued) Pd black Lindlar s catalyst + H2(g) only H H Nao in NH3(l) H only NH3(l) + H Official name (and abbreviation) for stereochemistry of alkenes below (jawohl!): H H H H Zusammen (Z) (old name: cis) Entgegen (E) (old name: trans)
Drill and practice: Alkyne chemistry part 2 (continued) Pt, Pd H + H2(g) + H H H 50:50 Acetic acid (conc.)* Br H + H 2 H Br H Solvent ? *= glacial acetic acid Br H CH2Cl2 Br + Br Br Solvent ? Br Indicate stereochemistry Trans (E) only
Drill and practice: Alkyne chemistry part 2 (continued) Glacial Acetic acid Br H + H H Br H Solvent ? Markovnikoff or anti- Markovnikoff addition product ? O HgSO4/ H2SO4 H H H2O + H H O H H H Initially enol finally keto Name of `shift illustrated above ?? Keto-enol shift Which is which ? Name for the pair together ? Tautomeric pair (Tautomers)
Drill and practice: Alkyne chemistry part 2 (continued) Carbonyl on anti- Mark side of alkyne B2H6 neat or in THF H2O2/OH- H H H O H What Nobel-Prize winning American chemist at Purdue University is associated with this two step process ? H. C. Brown (boron moron) The last two reactions of alkynes to make carbonyls can be classed as based on what was added across the triple bonds (see circled hint above) hydration
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