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Revision as of 06:06, 15 October 2018
Labwork
Just Why?- Manu
Introduction
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Methods
Here we're describing our methods. You can click any of the tabs to see what we did in each laboratory.
Generating Electrocompetent Cells
Transformation of Cells
Mini Preparation of Plasmid DNA
Maxi Preparation of Plasmid DNA
Restriction Digest and Ligation
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Explanation of distillation
Explanation of chromatographie
Explanation how to dry solvents
Synthesis of the Thiol-Esli
Synthesis of the Disulfid-Esli
Synthesis of the Azid-Donor
Labbook
This is our Labbook. It is the place, where we describe everything that we did.
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13.08.2018
Beginning of the synthesis of the Thiol-Eslicarbazepin in Toluen.
Esli-OH was treated with 0.5 mole equivalent of Lawesson's reagent in Toluene.
Reflux at 120°C gave a yellow liquid with white solids.
Purification with HPLC.
A sample was taken and given to mass spectrometry.
14.08.2018
The MS-Data was examined.
MS-Data gave a yield of >10%.
Drying of 1,2-dimethoxyethane with CuH overnight.
15.08.2018
Distillation of 1,2-dimethoxyethane, treating with N2 for storing inert.
16.08.2018
Alternative synthesis of the Esli-SH treated with 1,2-dimethoxyethane (DME) at room temperature with 0.5 mole equivalent of Lawesson's reagent, (method OH->SH).
17.08.2018
Drying the Esli-SH and purification by column chromatography (-> methods).
A sample was taken and given to mass spectrometry.
20.08.2018
The MS-Data was examined.
It gave indications of large impurities.
Further purification of the Esli-SH by column chromatography.
21.08.2018
First attempt of the synthesis of the Azid-Donor (method Azid-D). Natrium-Azide was suspended in Sulfuryl chloride and stirred overnight.
22.08.2018
The azide mixture was treated with Imidazole and dried in vacuo. After suspending in ethyl acetate the solution was treated with sulfuric acid to yield a crude, yellow solid.
A sample was taken and given to mass spectrometry.
23.08.2018
The MS-Data was examined.
MS-Data gave a no yield.
The second attempt for the synthesis of the Azid-Donor was started.
Sulfuryl chloride was treated with Natriumazid and imidazole, suspended in Acetonitrile and stirred for three hours.
The product was dried in vacuo, solved in ethyl acetate and treated with sulfuric acid to give no produkt.
The third attempt for the synthesis of the Azid-Donor was started.
An ice-cooled Suspension of Natriumazid in Acetonitrile was treated with Sulfurylchlorid.
Synthesis Disulfide-Eslicarbazepine was started.
The synthesis was performed under inert conditions. The SH-Esli was solved in THF/H2O, treated with Cysteamin and stirred overnight.
24.08.2018
The ice-cooled solution of the Azid was portion-wise treated with Imidazole.
It was stirred or three hours, diluted with ethyl acetate, washed, saturated and treated with sulfuric acid.
After stirring for one hour the crude, colourless product was obtained.
The product was dried in vacuo.
The solution of the S-S-Eslicarbazepine was freed of the solvent to obtain a crystalline, colourless solid.
27.08.2018
The S-S-Eslicarbazepine was further purified by washing with ethyl acetate and freeing of water.
A sample of the S-S-Eslicarbazepine was taken and given to mass spectrometry.
28.08.2018
The MS-Data was examined.
MS-Data gave a no yield, the reaction was not carried out as the pure reactants were obtained.
29.08.2018
It was tried to purify the reactants for further use, but it gave no yield.
30.08.2018
Destroying of the Azid-Donor.
31.08.2018
Cleaning
Interlab
Also in this year our team decided to participate in the iGEM InterLab Study. Kurze Beschreibung + Link zu READ MORE