pls solve this problem asap. Only solve first 3 parts with the help of below given material Pre Lab Questions:1. Write a valid mecharism for the reaction.2. What would happen if we used osmium tetroxide instead of the MDPBA in the reactionmixture? Draw the product(s)3. What functional group would you synthesize the alkene from?please help with the pre-lab questions withsteps thanks!Alkene EpoxidationSynthesis of 3,3-dimethyl-1,2-epoxybutaneBackground: For this assignment, the target compound that you should synthesize is 3,3-dimethyl-1,2-epoxybutane. Agais, this is an electrophilic alkene addition reaction. Examine theproduct to determine the location of the new functionality. The alkene is the electron-richpartner, and an electrophilic reagent is needed.Purpose: To synthesize an epoxide via an addition reaction to an alkene.Materials:Apparatus: Capture apparatus from Beyond Labz of the set up. Label parts for later.Chemicals:a. 3,3-dimethyl-1-buteneb. m-chloroperoxybenzoic acidc. m-chlorobenzoic acidd. Diethyl Ethere. Sodium Hydroxide

Formation of epoxide (oxiranes) from alkene is known as epoxidation reaction. Epoxide is an…

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pls solve this problem asap. Only solve first 3 parts with the help of below given material

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter24: Catalytic Carbon-carbon Bond Formation

Section: Chapter Questions

Problem 24.39P: E. J. Coreys 1964 total synthesis of -caryophyllene (essence of cloves) solves a number of problems...

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Starting from a terminal alkene R-CH=CH2, is there any advantage in using the two-step protocol (halohydrin formation + intramolecular williamson) over the direct epoxidation procedure? HINT: check for other reactions of MCPBA. Is this also an oxidant for other funcional groups? WHich ones? would a chemoselectivity problem be expected if those functional groups were also present during the epoxidation reaction?
Can someone explain the answers to 28, 29, and 30? The answers are B, A, A. I understand lindar catalyst makes cis alkenes and Na/NH3 makes trans alkenes but I dont understand how the second step of Br2, OsO4 influences the stereochemistry between the 2 . Will rate quickly if helpful. Thanks!
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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?
Step 1 Since you have asked multiple questions, we will solve the first question for you. If you want any specific question to be solved then please specify the question number or post only that question. 1. Sol :- Given incomplete reaction is : CH4 + Cl2, hv ------------> (a). Predict products and write complete chemical equation. (b) Write a stepwise mechanism for monochlorinated product formation. Be sure to show all the intermediate structure and all the electron flow using arrows. arrow_forward Step 2 (a). The given reaction is the photochlorination of methane, which undergoes free radical substitution mechanism in the presence of Cl2, light (hv) o gives mixture of products that is CH3Cl, CH2Cl2, CHCl3 and CCl4. In this reaction, one H of methane is replaced by Cl atom. Therefore, complete reaction is : arrow_forward Step 3 (b). Complete mechanism of photochlorination reaction is : Step.1 :- Chain initiation step :- Step.2 :- Chain propagation steps :-…
can i get help drawing out actual structures including the nucleophilic addition of Cy2NH to parafomaldehyde and its hemiaminal intermidiate and the condensation step when it is displaced by terminal alkyne forming allene, also what is dioxane getting rid of as the solvent, thanks
1. Using arrows to designate the flow of electrons, provide a detailed reaction mechanism for the synthesis of E-stilbene from benzaldehyde as performed in this lab. Show all the reactive intermediates and the major and minor products 2. The first image 3. The second image Thank you so much!
URGENT HELP PLEASE (this is not an exam question) 1-Bromobutane was hydrolysed by an aqueous sodium hydroxide (NaOH) solution. CH3CH2CH2CH2Br + NaOH → CH3CH2CH2CH2OH + NaCl 1-Bromobutane Butan-1-ol During the reaction, the reactant sodium hydroxide is used up. Samples of the reaction mixture were drawn off at regular time intervals and analysed by titration with standard sulfuric acid to find out the concentration of sodium hydroxide. The results are given in the table below: Time / s Concentration of OH- / mol dm-3 0 0.500 100 0.350 200 0.250 300 0.180 400 0.125 500 0.090 600 0.063 700 0.040 800 0.030 Plot a ‘concentration of OH- (mol dm-3) against time (s)’ graph using the results given in the table above. Label the vertical and horizontal axes of the graph and include the unit/s. Select 4…
Describe how the product is purified. 4,4'-DIBROMOBIPHENYL [Biphenyl, 4,4'-dibromo-] Submitted by Robert E. Buckles and Norris G. Wheeler1. Checked by R. S. Schreiber, Wm. Bradley Reid, Jr., and Robert W. Jackson. 1. Procedure In a 15-cm. evaporating dish is placed 15.4 g. (0.10 mole) of finely powdered biphenyl (Note 1). The dish is set on a porcelain rack in a 30-cm. desiccator with a 10-cm. evaporating dish under the rack containing 39 g. (12 ml., 0.24 mole) of bromine. The desiccator is closed, but a very small opening is provided for the escape of hydrogen bromide (Note 2). The biphenyl is left in contact with the bromine vapor for 8 hours (or overnight). The orange solid is then removed from the desiccator and allowed to stand in the air under a hood for at least 4 hours (Note 3). At this point, the product weighs about 30 g. and has a melting point in the neighborhood of 152°. The crude 4,4'-dibromobiphenyl is dissolved in 75 ml. of benzene, filtered, and cooled to 15°. The…
Need help showing the reaction mechanism between LDA and 2-chloropyridine. Show all reaction steps and transition states. Also include interactions and brackets as well as show all products and byproducts. Thank you :)