The mechanisms you are learning are analogous to many biochemical transformations, even if the atoms are different. Select the word that best describes what is happening to the blue structure. (Enz = Enzyme) %3D Enz products B: H-O-c-H NH2 H- OH CH,OPO, 2 reduction nucleophilic acyl substitution oxidation nucleophilic addition

The mechanisms you are learning are analogous to many biochemical transformations, even if the atoms are different. Select the word that best describes what is happening to the blue structure. (Enz = Enzyme) %3D Enz products B: H-O-c-H NH2 H- OH CH,OPO, 2 reduction nucleophilic acyl substitution oxidation nucleophilic addition

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

Chapter19: Enolate Anions And Enamines

Section19.9: Crossed Enolate Reactions Using Lda

Problem JQ

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A chemist synthesized compound X as a racemic mixture. When the ketone group in X was enzymatically reduced to the corresponding alcohol, a 100% yield was obtained of the product shown below. Choose the statement that best describes this result. ОН enzyme C;H1 `OCH,CH; pH 4.0 C3H1 `OCH,CH3 ОН ÕH X (racemic) (100% yield) One enantiomer of compound X reacts quickly with the enzyme. The other enantiomer of compound X is unreactive, but rapidly equilibrates with the reactive enantiomer under the reaction conditions. Since compound X was racemic, it makes sense that only a single product was obtained. O The product is a meso compound, so either enantiomer of compound X gives the same product. One enantiomer of compound X reacts quickly with the enzyme, while the other enantiomer of compound X remains unchanged.
Name the reaction HSO, 4 R- R=R .R R 1) R,BH R H R. 2) NaOH, HaO, O Hydration Acid-Catalyzed-Hydration O Hydrohalogenation Hydrogenation 工

Acyl transfer (nucleophilic substitution at carbonyl) reactions proceed in two stages via a "tetrahedral intermediate." Draw the tetrahedral intermediate as it is first formed in the following reaction. CI H₂N OH • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • Do not include counter-ions, e.g., Na+, I, in your answer. • In cases where there is more than one answer, just draw one. Sn [F
CH3 CH3 Br- Br2 .CH3 CH2Cl2 CH3 H3C H3C Br Electrophilic addition of bromine, Brɔ, to alkenes yields a 1,2-dibromoalkane. The reaction proceeds through a cyclic intermediate known as a bromonium ion. The reaction occurs in an anhydrous solvent such as CH,Cl,. In the second step of the reaction, bromide is the nucleophile and attacks at one of the carbons of the bromonium ion to yield the product. Due to steric clashes, the bromide ion always attacks the carbon from the opposite face of the bromonium ion so that a product with anti stereochemistry is formed. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions CH3 CH3 CH3 CH3 H3C H3C :Br: :Br:
Draw the organic product you would expect to isolate from the nucleophilic substitution reaction between the molecules shown. Note: You do not need to draw any of the side products of the reaction, only the substitution product. + H₂O Cl + ☑ 5 C Click and drag to start drawing a structure.
Vhich of the following statements is incorrect? * 3 p Hammond-Leffler Postulate states that there is a strong resemblance between the transition state and the product in an endothermic reaction. Hammond-Leffler Postulate states that there is a strong resemblance between the transition state and the reactants in an exothermic reaction. The presence of more electron-donating alkyl groups ineffectively delocalize the positive charge in an organic molecule, making it less stable. The dehydration of primary alcohol proceeds via E2 mechanism. All of the abovę
Draw the organic product you would expect to isolate from the nucleophilic substitution reaction between the molecules shown. Note: You do not need to draw any of the side products of the reaction, only the substitution product. OH- 0 + I X Click and drag to start drawing a structure.
Shown below is a carbocation intermediate in an electrophilic addition reaction of HCl with an alkene. For the conformation shown, select each hydrogen whose bond to carbon is aligned for effective hyperconjugation with the vacant p orbital on the positively charged carbon. Each adjacent carbon will have only one C-H bond so aligned. • Gray = C; white = H; red = 0; blue = N; dark green = Cl; brown =Br; light green =F; purple = I; yellow = S; orange = P. • Double click to select atoms. • You can zoom in and out using the mouse scroll wheel (or pinch to zoom on touch screens).
20:24 : ●●● E) 03 12. Fill in the box with the major organic product of the first step of the reaction shown? The first step of the reaction shown is an exhaustive methylation and is one of the SN2, SN1, E2, or E1 reactions. Another piece of information about this full reaction, the second step proceeds via an E2 mechanism. xs CH₂l 13. What is the name of the reaction in the previous question? A) Swern Oxidation Hofmann Elimination ABCD Ag₂O, A Cope Elimination Williamson Ether Synthesis Send a chat O
Acyl transfer (nucleophilic substitution at carbonyl) reactions proceed in two stages via a "tetrahedral intermediate." Draw the tetrahedral intermediate as it is first formed in the following reaction. 0 OH CI + H₂N • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • Do not include counter-ions, e.g., Na+, I, in your answer. In cases where there is more than one answer, just draw one. A ChemDoodle Activate Windows
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