Alkyne Acid Catalyzed Hydration Reaction and Mechanism
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- Опубліковано 9 лют 2025
- Leah4sci.com/al... presents: Alkyne Hydration Reaction and Mechanism
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This video walks you the acid catalyzed hydration of alkynes reaction, and step by step mechanism. Learn how keto-enol tautomerization transforms the hydration product from an enol to a ketone, as well as how this reaction changes when dealing with an internal vs terminal alkyne.
In this video:
[0:21] Intro. Alkyne Hydration Rxn
[1:57] Sample Alkyne Acid catalyzed Rxn
[4:48]Description of Keto-Enol Taurtomeriza
[9:36] Rxn with asymmetrical Alkyne
Links & Resources Mentioned In This Video:
Keto Enol Tautomerization Tutorial leah4sci.com/ke...
This is Alkyne Video #3. Catch the entire Alkyne Video Series Along with the Alkyne Reactions Cheat Sheet on my website at leah4sci.com/al...
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Why didnt I find this channel Earlier in life?😔
What an amazing explanation...
One of the rare channels that forces you to recommend to your best friends in university...❤
Wow, thank you so much! Glad you've enjoyed the videos.
These videos will help a lot during revisions... Im saving this📌❤
I'm so glad to hear it!
I love all your videos, wish my professor show less unrelated stuff and straight to the point like you.
Happy to help!
I guess it's quite randomly asking but does anybody know a good website to watch new series online ?
@Johnny Aydin Flixportal :D
@Clayton Eden Thank you, signed up and it seems to work :D I appreciate it!
@Johnny Aydin no problem =)
thanx for the proper explanation mam...
You're very welcome
THANK YOU I UNDERSTAND NOW
WOOHOO that's awesome!
And yet another great video!
So glad you like it!
Always the best
Wow, thank you so much!
I love your presentations
Glad to hear that!
Very good
Glad you like it!
Can you explain when I should add anti-addition ? I didn't get symmetry ? You mean tran ?
Anti addition is when they add to opposite sides of the pi bond. In the case of an alkyne it's less relevant given that the starting molecule has 2 pi bonds starting linear, giving you a very different type of stereochemistry in the final product if at all
Thnx for the video :D
you're very welcome
Would the terminal alkyne not form an aldehyde or is that why you offered to options.
I know there's anti-markovnikov and markovnikov that bit confuses me
A terminal alkyne will form an aldehyde, but not under acidic conditions. Acid catalyzed hydration favors a Markovnikov product putting the enol and then the ketone on the more substituted carbon. Hydroboration favors antimarkovnikov and will put the enol then aldehyde on the terminal carbon
Hey Leah, aren't vinylic carbocations too unstable to be formed during reactions? Thanks for the video, it helps me a lot.
yes, technically they are pi complexes, but this is easier to demonstrate.
Correct, a vinyl carbocation is very unstable
Awesome
:)
I love you❤
Thanks? I hope the video helped!
In our class it was taught that HgSO4 is also in this mechanism and forms a mercuric enol- is this always necessary?
HgSO4 is a different reaction called oxymercuartion. HgSO4 will act as a catalyst making the reaction faster
You're thinking of a similar but not the same reaction
Anyone else not understanding where the purple hydrogen went to be replaced by the red one?
Could you give me a time stamp for the replacement you're talking about? I'm not seeing exactly what you're speaking of.
@@Leah4sci the structure you just drew at 2:57 has a Hydrogen bound on top , but in the very next structure its not there??
@@arham8441 because in this type of representation a hydrogen is not needed to be specified as the number of hydrogens needed to satisfy valency are present there and not specified.
@@ConnorMcBaldur thankyou so much 😊