3) For the reaction below, would the starting material (chalcone) or the product have longer retention...
What would happen to the retention time of a compound if the following changes were made? Decrease the flow rate of the carrier gas Increase the temperature of the column Increase the length of the column How do the temperature and flow rate of the carrier gas affect the separation of two compounds that have been shown to separate by GC? 5. Rank the following compounds in terms of expected retention times on a non-polar GC Column TOH OCH.CH MW-114...
Draw the structure of the starting material in the ozonolysis reaction below. Hint: The starting material and product have the same number of carbons (i.e., 1 mol reactant : 1 mol product.
4. You will analyze the purity of propyl-p-tolyl ether by GC. Assuming that some n-Pr-I (starting material) is present, which compound, n-Pr-I or propyl-para-tolyl ether (product), eluted from the gas chromatography column first (had the shorter retention time). Explain the order of compound elution in terms of molecular structure and boiling point. 5. Using the same experimental procedure as in this experiment, explain why using para-bromotoluene and sodium n-propanoxide (which in principle, would give the same product) would not work....
Draw the structure of the starting material in the ozonolysis reaction below. Hint: The starting material and product have the same number of carbons i.e., 1 molreactant : 1 mol product.
What alcohol would be used as the starting material to obtain 1-methylcyclohexene as a product in an E1 elimination reaction when using sulfuric acid as a catalyst and H2O as the solvent to pull the hydrogen from the carbocation. Please explain why that alcohol would be used.
looking for a check of my work, is this correct? if not please let me know. thanks! 1. (23 Total Points) Gas Chromatography a. (5 pts) Circle the BEST answer for the question below. Of the compounds listed below, which would you expect to eluto last from a nonpolar gas chromatographic column? 3 • n-Propanol (CH3CH2CH2OH) Polar Polar = 7* (mPoland 1. Methanol (CH3OH) Polar NON-Polar = 2nd 4. n-Butanol (CH3CH2CH2CH2OH) ВР 1st Low C . n-Pentanol (CH3CH2CH2CH2CH2OH) and Higher...
Cyclohexenone is a useful starting material for drug synthesis. For each reaction below, predict the major addition product for the reaction between an ?,?-unsaturated ketone and carbon nucleophile.
For the reaction below, focus only on 2-methyl-2-butanol (starting material) and 2-chloro-2-methylbutane (desired product). We will not analyze HCl or H2O by IR. From the two IR spectra below, identify which spectrum belongs to which molecule. Then label the IR spectrum with the molecule’s characteristic IR peaks. Highlight or place a box around the most characteristic peak in the starting material’s IR. You do not need to label the fingerprint region. For the reaction below, focus only on 2-methyl-2-butanol...
Draw the product of the reaction shown below. The starting material has two acidic protons and the first step involves two equivalents of primary alkyl halide. The first step is a double S_N2 reaction. The second reaction is two [3, 3]-sigmatropic rearrangements. After each individual [3, 3]-sigmatropic rearrangement, the molecule rearomatizes. The product contains two alcohol groups.
Cyclohexenone is a useful starting material for drug synthesis. For each reaction below, predict the major addition product for the reaction between an a,B-unsaturated ketone and carbon nucleophile. (1) (CH, CH, Culi (2) H* (1)CH,CH,MgBr (2) H