10. Addition Reactions
Alkyne Hydrohalogenation
10. Addition Reactions
Alkyne Hydrohalogenation - Video Tutorials & Practice Problems
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Get a 10 bullets summary of the topicAlkynes contain two π-bonds, so when they are exposed to electrophiles, they do exactly what you would expect them to do:they react TWICE with them.
Halogens Add Twice to Alkynes
1
concept
General properties of double addition reactions to alkynes.
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Video transcript
Keep in mind that for some of these reactions, vinyl carbocations will be created. While unstable, these cannot rearrage, so don’t worry about carbocation rearrangements when reacting with alkynes!
![Content](https://cdn.clutchprep.com/guide_visuals/inline_images/mCAf_wYCPoI3gLBxnifHhg.png)
2
concept
Double hydrohalogenation of alkynes.
Video duration:
2mPlay a video:
Video transcript
General Reaction:
- Product: gem-dihalides
![Content](https://cdn.clutchprep.com/guide_visuals/inline_images/g-6ECoz8HsbYkvh-mHiafQ.png)
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Additional resources for Alkyne Hydrohalogenation
PRACTICE PROBLEMS AND ACTIVITIES (15)
- Predict the major product(s) of the following reactions: a. phenylacetylene + 2HBr b. hex-1-yne + 2HCl
- Propose a mechanism for the entire reaction of pent-1-yne with 2 moles of HBr. Show why Markovnikov's rule sho...
- (••) For the alkynes shows here, show the product(s) expected to form when treated under the following conditi...
- (••) For the alkynes shows here, show the product(s) expected to form when treated under the following conditi...
- Predict the alkyne and reactants you might use to make the following haloalkenes. [Providing the reactant and ...
- HBr and peroxides are also used to generate 1-bromo-1-alkenes. Suggest a starting reactant that would successf...
- Predict the major products resulting from the addition of one equivalent of HX to the following alkynes.(b) &l...
- Predict the alkyne and reactants you might use to make the following haloalkenes. [Providing the reactant and ...
- (••••) The addition of H―X to alkynes has been shown to occur predominately via anti addition:<IMAGE>Two...
- What is the major product obtained from the reaction of each of the following compounds with excess HCl?c. CH3...
- Answer Problem 39 , parts a–h, using 2-butyne as the starting material instead of propyne.a. HBr (1 mol)b. HBr...
- Predict the major product(s) of the following reactions:c. cyclooctyne + 2HBrd. *hex-2-yne + 2HCl
- Show how hex-1-yne might be converted tof. 2,2-dibromohexane.
- Using hex-1-ene as your starting material, show how you would synthesize the following compounds. (Once you ha...
- Predict the products of reaction of pent-1-yne with the following reagents. (a) 1 equivalent of HCl (b) 2 equ...