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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Derek901515246 on April 27, 2013, 06:14:58 PM

Title: Catechol borane and disiamylborane
Post by: Derek901515246 on April 27, 2013, 06:14:58 PM

Hello, I just joined this site and this is my first post. I've heard great about this site and im pretty excited about it.
Okay so Catechol borane and disiamylborane. A terminal alkyne will always be converted into an aldehyde, but what about a non-terminal alkyne such as a 2-alkyne. Will these reagents always convert an alkyne into a ketone, or are they considered a poison catalyst and stop the reaction at the aldehyde? Thanks a lot. Also, using Hg²⁺ / H₂SO₄ with a 2-pentyne will produce two ketones right? Since both initial Carbons do not have any H's attached.