We used to perform this experiment using diethylether or THF as the reaction solvent. We now use DCM, which has similar solvent properties. Give a practical reason for the change to DCM
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- Show reasonable mechanisms for the following reaction.A solution of the following three compounds in ether is extracted first with aqueous HCl, secondly with aqueous NaHCO3. Where will each of the three compounds reside after the procedure: the NaHCO3 extract, the HCl extract, or the ether layer? Please explain with the help of pKa numbers. (image of compounds attached)Evaluate the chemical reactions carefully. Predict the reagents required (marked with letters) in order to satisfy the given reactions.
- why is the temperature cooled to 100degree celcius in the reaction of benzil and 1,3dipenhyl acetone after the addition of the TEG before the adding the base triton B, also what is the mechanisim for that reaction to occur ?Given the sequence of reactions shown below assume the reactions are stoichiometric fill in the reagents needed for steps A B and C and explain what happens in each step of the reactions, by also nameOne possible side-reaction of this experiment is biphenyl, explain how it can be formed. Here is the oringial reaction bromobenzene ----->magnesium. product is benze ring with MgBr attached to ring
- Q1: Give one lysis buffer that is commonly used for western blotting experiments and include its components Q3: To make sure that you used a similar amount of samples, what important step should be done before proceeding the electrophoresis stage? Q4. Why is it necessary to store the prepared lysates in a very low temperature?Write a short note on how to perform the Acree-Rosenheim reaction test. Make sure to mention the reagents needed, the steps required, and the indication of a positive result.In step 2 of the reaction sequence HCl is added to the basic reaction mixture after the reflux period. Show a reaction (with full structures) that explains the purpose of the HCl.
- Write applications of Knoevenagel reactionExplain the purpose of the desiccator. How would your results differ if you didn’t use it?In this experiment, we produce 2 different white solid compounds. We assume that one recovered white solid compound is p-toluic acid and we assume the other is p-tert butyl phenol based on their acid-base properties. Explain how we could be be more certain about the assignments (alternatively, if you don’t label your flasks/solids well, how could you determine what the structure of each of the isolated solid is) Hint: there are techniques from previous experiments that we could use to help identify the solids.