Question 34 Predict the FINAL (?) product (or a mixture of products) for the following synthetic transformation: OA OB 0 0 0 0 ABCD HO 1. CH3MgBr 2. H₂O two enantiomers Br2 H₂O 1. Og 2. Me₂S Zaitsev product NaOEt 1. MCPBA 2. H₂O* ? ? two enantiomers A B C D HO OH OH он OH HO HO OH он OH он
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- EXP VIDEO https://www.youtube.com/watch?v=9Wxxv7kwXlA&list=PLE-217H0ao60Uzpzj-FNP_0ScVp5SZB7j&index=8 1.Pre lab question What are the functional groups in your substrate? -Nitrate -Nitrate and acetate -Amide and ether -Benzene ring b.The stable reaction intermediate in this reaction is Nitronium ion Benzonium ion Carbocation Carbanion c.How would you distinguish between 2-nitrophenacetin and 3-nitrophenacetin? -Color difference -Melting point difference -Difference in Molecular weight -They cannot be differentiated. dAn ether group is -Ortho para activating -Meta activating -Ortho para deactivating -ring activator eThe catalyst in this experiment was -Glacial acetic acid -Nitric acid -Sulfuric acid -Ethanol fThe chemical waste from this experiment should be discarded in the -Sink -Halogenated waste container -non-halogenated waste container -Heavy metal waste container. gWhat is the limiting reagent in this experiment? -Nitric acid -Glacial acetic acid -Phenacetin…I recovered 3 mL of cyclohexene, how many grams of water was produced in the reaction please show how? Cyclohexanol can attack the carbocation intermediate formed during the synthesis of cyclohexene. Draw this side product with the molecular formula C12H22O. Please ASAPPPP you guys didn't answer the last onea. Propose a synthetic pathway for cis-[NiCl2(CO)2] using trans-effect. b. Propose the methods to differentiate the isomers in between [RhCl2(H2O)4]Cl and [RhCl3(H2O)3].H2O.
- E. J. Coreys 1964 total synthesis of -caryophyllene (essence of cloves) solves a number of problems of construction of unusual-sized rings. The first step uses an efficient photochemical [2 + 2] reaction. The desired stereochemistry and regiochemistry had been predicted based on model reactions. (a) [2 + 2] Reactions are quite common in photochemical reactions. Would this reaction be predicted to occur in the ground state? The next steps follow. Basic alumina is a chromatography support that will often act as a base catalyst. (b) What is the mechanism of the first step? (c) What is the mechanism of the second step? (d) Look at later steps in the synthesis. Does the stereochemistry of the added carbomethoxy group matter? The next steps are shown here. (e) What is the structure of compound (A)? (f) Give a mechanism for the formation of the cyclized product. (g) Give a mechanism for the first step. Hint: Attack on the lactone carbonyl may be the first step. (h) Give a structure for product (B). The following two steps are next. (i) Show the reactions of (B). (j) Write a mechanism for the ring-opening reaction. Hint: Note the presence of an acidic proton and a good leaving group in the molecule. The synthesis was completed by the following steps. (k) What is (C)? (l) What reagents would you use for these transformations?QUESTION 4Predict the products(s) from the reaction of 1-hexyne with each of the following reagents:a) 1 mole of HBrb) H2O, H2SO4, HgSO4c) 2 moles of Br2d) Excess Cl2e) 2 moles of HCl with H2O2f) 1 mole of HClDraw the organic product formed for each reaction. e. CI & COOH COOHfallization of A COOH [1] LDA [2] CH3CH₂I [1] Br₂, CH3CO₂H [2] Li₂CO3, LiBr, DMF 1₂ (excess) TOH -aminopher should you use NaHnimm CN to the Büchn Br₂ (excess) -OH ydride to form ace + CHI3 rinse the task wh
- Qa 18. Bromination of 5a-cholestan-3-one occurs at C-2 or C-4 to give 2 regioisomers. Two unsaturated ketones with lambdamax = 230 nm and lambdamax = 241 nm are yielded during dehydrobromination. Use Woodward-Fieser rules to distinguish between the two.Monensin (1) is a potent antibiotic. JACS 1980, 102, 2118-2120. 1. Use arrows provided a pathway from (1) to (2) when we add a mild base sodium bicarbonate followed by iodine (I2). 2. What was a similar reaction between Br2 and an alkene? What did we name the intermediate?Ll.26. which of the following are carbocations formed during the SN1 reactions shown below?
- In laboratory, Dr. Nur found out that the hydrolysis of nitriles (R—CN) when heated under reflux with dilute sulfuric acid yielded a major compound A. When compound A reacts with element N it showed that two products are produced (salt and gas). Meanwhile, the reaction of compound A with methanol yielded aromatic scent of compound B. She also noticed two products (compounds C and D) were obtained when she react compound B with reagent Lithium Aluminium Hydride (LiAlH4). Dr. Nur was observed compound C can be prepared naturally in the presence of enzymes in yeast through anaerobic conditions. Further investigation showed when compounds C and D can react with acidified potassium permanganate will produce compound (compounds E and F) with similar functional group. Dr. Nur also discovered compound E will produce silver mirror when react with reagent M and vice versa from compound F. Identify the possible expanded structure of compound A, B, C, D, E and F. Predict the…1. Reaction mechanism 2. Show sterochemistry20. (a) Show all steps in the synthesis of 2-pentene from 2-bromopentane. Show the structure of all reactants and product. CH3CHBrCH2CH2CH3 -------> CH3CH=CHCH2CH3 (b) Correctly identify the mechanism in (a) above(SN2, SN1, E2, E1)