For the following reaction, polarimetry was used to determine the optical purity of the products. Need help naming two other methods that I could use to determine this and describe how they work. Thank you :
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Q: The solvent level in the development chamber should be above the level of the spotted compounds on…
A: The solvent level in the development chamber should be above the level of the spotted compounds on…
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Q: Post-lab Questions: does this say about the purity of your solid?
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Q: 1. Which is a false statement regarding solid-phase synthesis?
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Q: Mode of separation that uses a polar stationary phase: IEX HILIC SEC NPLC
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For the following reaction, polarimetry was used to determine the optical purity of the products. Need help naming two other methods that I could use to determine this and describe how they work. Thank you :)
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- All methyl esters of long-chain aliphatic acids (e.g., methyl tetradecanoate, C13H27COOCH3) show significant fragment ions at m/z 74, 59, and 31. What are the structures of these ions? How are they formed?Addition of PPh3 to a solution of Wilkinson’s catalyst, [RhCl(PPh3)3], reduces the turnover frequency for the hydrogenation of propene. Give a plausible mechanistic explanation for this observation.Consider the calcination of CaCO3 Before calcination, the initial weight of CaCO3 is 1.005g. After calcination, the final weight becomes 1.0 g.Calculate the fraction reacted of CaCO3
- Make an electron-flow-mechanism for this synthetic scheme. This involves predicting major and by-products using electronic and structural effects. The arrow push mechanism must be shows. (from the reaction of α-ketoacids and oxaprolines to proteins that contain native serine residues)A reaction for converting ketones to lactones, called theBaeyer–Villiger reaction, is used in the manufacture of plastics and pharmaceuticals.3-Chloroperbenzoic acid is shock-sensitive, however,and prone to explode. Also, 3-chlorobenzoic acid isa waste product. An alternative process being developeduses hydrogen peroxide and a catalyst consisting of tindeposited within a solid support. The catalyst is readilyrecovered from the reaction mixture. (a) What wouldyou expect to be the other product of oxidation of theketone to lactone by hydrogen peroxide? (b) What principlesof green chemistry are addressed by use of the proposedprocess?Data: Density of p-phenetidine is 1.065g/mol Williamson Ether Synthesis: Mass of filter paper: 0.680 g Mass of filter paper and product: 1.482 g Melting Point: 134-136oC Amide Synthesis: Mass of filter paper: 0.686 g Mass of filter paper and product: 1.589 g Melting Point: 135-137oC Mixed Melting Point (product of amide synthesis mixed with Williamson Ether synthesis product): 134-136oC (a)Calculate theoretical yield of both williamson ether synthesis of phenacetine and amide synthesis of phenacetin. (b) calculate the percent yield of phenacetin obtained via williamson ether synthesis. (c) Calculate the percent yeild of phenacetin obtained via the amide synthesis.