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- 2) Complete the mechanisms for the following reactions. A) = H₂0 H₂ soa B) OH H₂SO4 Hint: Consider the methyl Shift mechanism. What if you did a similar Shift with the quatrinary carbon?Provide the E2 mechanism for β-elimination reactionemploying 2-chloro-2-methylbutane to prepare 2-methyl-2-butene and 2-methyl-1-butene reaction. Use the actual structures of thereactants and products. Explain which of the alkenes is the major product ofthis reaction ?please provide full organic mechanism for the attached reaxtions using proper arrows, lone pairs and charges.
- 4) Provide a detailed, stepwise mechanism for the acid-catalyzed condensation reaction between cyclohexanone and H2N-CH3.The formation of Br2 from NBS first involves the reaction of NBS with HBr to form an iminol intermediate and molecular bromine. The intermediate then undergoes acid-catalyzed tautomerism to form succinimide, the byproduct of the reaction. Propose a curved-arrow mechanism for the conversion of NBS into succinimide that also accounts for the formation of Br2.Draw the mechanism of the following reaction. :CB12 Br' Br
- How is the mechanism for oxymercuration/demercuration reactions of alkenes understood? How are the (Markovnikov) products predicted and what reagents would you need to use to incorporate this reaction into a multistep synthesis strategy. Finally, what makes this a potentially more useful way to synthesize alcohols from alkenes than simple acid hydration?Treatment of a cyclic ketone with diazomethane is a method for accomplishing a ring-expansion reaction. The reaction involves the initial nucleophilic attack by diazomethane on the carbonyl carbon to form a tetrahedral intermediate. Collapse of this intermediate is accompanied by bond migration and loss of N,. For example, treatment of cyclohexanone with diazomethane yields cycloheptanone. CH2N2, ether + N2 Draw the structure of the organic product(s) of the ring expansion of this compound: • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • Do not include lone pairs in your answer. They will not be considered in the grading. • Draw one structure per sketcher Add additional ketchers usina the dron down menu in the bottom right co Previous NextThis reaction is also an important reaction of the tricarboxylic acid cycle in cells, wherein the reaction occurs in neutral solution, so the acid groups are both ionized to the carboxylate form. The reaction is catalyzed by the stereospecific enzyme fumarase that utilizes only the trans form of 2-butenedioate ion (also known as fumarate) and produces only the (S)-2-hydroxysuccinate enantiomer (also known as (S)-malate). Draw the correct stereochemical structures of these two compounds of the fumarase-catalyzed reaction. Be sure to include all hydrogen atoms and show the carboxylates as anions.
- For the following sets of substitution reactions that occur via an SN2 mechanism, draw the main organic substitution product (i.e., not the leaving group, for each reaction draw the product, though the products may be equivalent) and indicate which reaction occurs at the faster rate. (a) H3C CH₂O H3C E H3C Br (b) Br CH3O H3C + H3C-Br CH3O- H3C-Br(b) Redraw and complete the diagram below to illustrate nucleophilic attack by the N7 atom of a guanine base on a prototypical alkylating agent R-L, where "L" is a leaving group. R Zum N ΝΗ NH₂ -L ?(ORGANIC CHEMISTRY) (mechanisms) please give a answer for the following mechanism. Provide a detailed stepwise mechanism for the following transformation.
