Preparation of an enol ether from a ketal.
In the flask the ketal is refluxed with catalytic amount of acidic catalyst and the generated methanol is removed by distillation.
Why do I use this strange looking glass column? Because the methanol what is generated is much more volatile than what I started from, so it could easily distill out from the reaction mixture, while my compound stays in the flask at the bottom.
9:30 pm • 15 April 2014 • 31 notes
Trying out a new UV lamp.
The mercury vapor lamp is placed in a double walled quartz tube what will serve as a water cooled, tempered UV light source, used for photochemistry.
9:30 pm • 14 April 2014 • 28 notes
Large scale laboratory synthesis: product of a nitration after pouring it on ice in a 10l bucket.
9:31 pm • 13 April 2014 • 21 notes
Sometimes the molecule structure could be specified after decomposing the pure product.
In this case I dissolved my compound in a solvent and heated as much as I could, to decompose it to something else, what could prove the molecular structure of my previous compound.
9:30 pm • 12 April 2014 • 43 notes
Product of a nitrosation.
The greenish-blue color is caused by the generated dinitrogen-dioxide what was a side product of the reaction. Since nitrous gases are not so good for our health, argon is bubbled through the solution to eliminate the nitrous fumes (mainly nitrogen dioxide) from the reaction mixture.
9:30 pm • 11 April 2014 • 23 notes
Something special crystallized at the bottom of a flask, a cuneane based compound, what was obtained by the rearrangement of a cubane based molecule.
What is cubane and what is cuneane and what is this rearrangement? Cubane (1) is a square shaped and cuneane (2) is an wedge shaped molecule, both are strained.
For more information read this recently published article what was published by my supervisor:
Solvent-induced, selective rearrangement of hydrogen cubane-1,4-dicarboxylate to hydrogen cuneane-2,6-dicarboxylate
Gábor Durkó, István Jalsovszky
Tetrahedron, Volume 69, Issue 25, Pages 5160–5163
9:30 pm • 10 April 2014 • 50 notes
The greatest experiments are usually not really spectacular, just as in this case.
In the test tube something really special happened according to the NMR spectra of the isolated compound. Looking forward to find out something interesting about it.
9:30 pm • 9 April 2014 • 14 notes
Bad idea no.: 145687463
Exaporating acetic acid and nitrous gases from a reaction mixture on a rotavap.
9:30 pm • 8 April 2014 • 32 notes
Opening a large ampoule with molten glass.
The neck of the ampoule is scratched and it is touched with a molten glass rod what breaks the glass in the direction where it was scratched.
9:30 pm • 7 April 2014 • 24 notes
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10:25 pm • 6 April 2014 • 17 notes