Comments on: Synthesis (5) – Reactions of Alkynes https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/ Wed, 29 May 2024 17:15:15 +0000 hourly 1 https://wordpress.org/?v=6.6.2 By: Reactions of Alkanes, Alkenes, and Alkynes https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-695085 Wed, 29 May 2024 17:15:15 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-695085 […] https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/ […]

]]> By: Benzene is love https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-688393 Thu, 21 Mar 2024 06:22:24 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-688393 Hey james, there’s a slight error in the key rxns of alkykes. In the last reaction(oxidative ozonolysis) the alkyne doesn’t break to give carboxylic acids, only the terminal alkynes do. But thanks for a nice worksheet anyway. It sure helos in JEE.

]]> By: Mia https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-593282 Wed, 06 Jan 2021 12:00:52 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-593282 I haven been taught that whenever we use alcoholic KOH for the formation of unsaturated compounds ,rearrangement of double or triple bond will take place leading to more substituted unsaturated compounds.In case of Alkynes ,I thought the added heat will favour rearrangement not the KOH itself but this is not the case.So plz can you tell how KOH favours rearrangement in detail?

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-556294 Thu, 13 Jun 2019 19:06:58 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-556294 In reply to syed.

No, you need to go up an oxidation state.

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-556293 Thu, 13 Jun 2019 19:06:26 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-556293 In reply to Donna.

Awesome. Thanks Donna!

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-555506 Tue, 21 May 2019 04:01:49 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-555506 In reply to Pete Riches.

Do you have a specific example?

]]> By: Pete Riches https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-555489 Mon, 20 May 2019 21:11:46 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-555489 Please could you describe the mechanism for the reaction between Alkynes and benzene to form PAH’s? Thank you.

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-554700 Fri, 03 May 2019 19:11:45 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-554700 In reply to Matthew D’Onofrio.

No, it doesn’t. There’s lots of other options. Alkyllithiums will do the job nicely, as will LDA in ethereal solvents and many other strong bases. Water is a no-go, though – it’s too acidic to use as a solvent for the deprotonation of alkynes.

]]> By: Matthew D'Onofrio https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-541314 Thu, 25 Oct 2018 19:09:41 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-541314 In reply to James.

Hey James, does NH3 always have to be the solvent to create an acetylide anion from an alkyne? Can one just use water as a solvent and add NaNH2 to the alkyne to create the acetylide anion?

]]> By: PA https://www.masterorganicchemistry.com/2014/01/29/synthesis-5-reactions-of-alkynes/#comment-514436 Sat, 10 Jun 2017 22:50:26 +0000 https://www.masterorganicchemistry.com/?p=7929#comment-514436 Thanks for this site; it is very helpful to my work.

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