This video discusses most of the reactions of alkynes that you need to prepare for your organic chemistry test. It shows you how to find the major product and how to identify the reagents you need to synthesize the product. It provides the reaction mechanisms for the synthesis practice problems.
Here is a list of reactions covered in this video:
Oxymercuration - HgSO4 H2SO4 H2O Alkyne to Ketone
Hydroboration - Sia2BH THF H2O2 OH- Alkyne to Aldehyde
Halogenation - HBr, HBr & H2O2 (peroxide), & HCl (markovnikov and anti markovnikov addition) - Alkyne to Alkyl Halide, Geminal Dihalide
Bromination - Br2 & Chlorination - Cl2 in CH2Cl2
H2 Lindlar's Catalyst - Pd BaSO4 & Quinoline - Alkyne to Cis Alkene
Na or Li & NH3 - Alkyne to Trans Alkene
H2 & Pt Catalyst - Alkyne to Alkane
Direct Alkylation Using NaNH2 Followed By an Alkyl Halide (coupling)
Oxidative Cleavage - KMnO4 & H3O+ - Alkyne to Carboxylic Acid
Ozonolysis - O3 & H2O
Direct Acylation, Epoxide Ring Opening, Carboxylation, etc.
This video also discusses the relative bond length of an alkyne, alkene, and alkane in addition to the acidity and pKa of the acetylene molecule. The acidity of the alkyne was explained by hybridization - specifically the high s character of the sp hybrid orbitals.
Tagged under: alkyne synthesis reactions,reactions alkynes,alkynes,practice problems,examples,pka,acidity, character,sp hybrid orbitals,ozonolysis,O3,o3 h2o,kmno4 h3o+,alkylation,nanh2,h2 pt,na nh3,li nh3,lindlar catalyst,cis alkene,trans alkene,Pd baso4,bromination,chlorination,br2,cl2,hbr,hbr h2o2,halogenation,major product,alkyne reagents,hgso4 h2o h2so4,hgso4,sia2bh,hcl
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip
Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans
1. Students enter a simple code
2. You play the video
3. The students comment
4. You review and reflect
* Whiteboard required for teacher-paced activities
With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.
Carry out a quickfire formative assessment to see what the whole class is thinking
Create interactive presentations to spark creativity in class
Student teams can create and share collaborative presentations from linked devices
Turn any public video into a live chat with questions and quizzes