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- In EAS bromination reactions, a -NHCOCH3 substituent on the aromatic ring is: O an activator and an o,p-director. O a deactivator and a m-director. an activator and a m-director. NHCOCH3 catalyzes the 1,2 addition of bromine across the double bond O a deactivator and an o,p-director.In the following electrophilic aromatic substitution reaction, the major product results in the substitution occurring at the 2 position. Starting from each potential carbocation intermediate shown, (a) draw the possible resonance structures and (b) explain why the major product is favored. Br 4 Br2 5 Br major product minor product + Br Br 2. LOb).. .. Under each potential product of this E2 elimination, write "major product," "minor product," or "not formed." Me Br H Me Me OH Me Ph Ph H Me H Et Me Me Me Ph Ph Me Me Et
- Identify the major product of the following reaction sequence. 1) [H*], H₂NNH2, (-H₂O) 2) KOH/H₂O, heat HO₂C HO₂C HO CO,H OH OH There is no reaction under these conditions or the correct product is not listed here.Circle the drawing that best describes the transition state structure for the addition step (first step) of the acyl substitution reaction shown in the box below. Place a box around the drawing that best describes the transition state structure for the elimination step (second step) of the acyl substitution reaction shown in the box below. + CH;CH2O Br + CH3 Br CH3 OCH2CH3 8- -Br 8- -Br CH3 CH;CH2Ó 8- CH3 CH;CH,Ó 8- CH3 CH;CH20 Br 8- 8- CH3 8- Br CH3 Br CH3 Br CH;CH20 8- CH3CH20 8- CH3CH20Answer the question below the reaction. ta The reaction above proceeds through which type of mechanism? SN2 SN1 E1 E2 OH + Excess NH4C1 H₂SO4 + H₂O
- Your task is to convert 2-bromobutane to 1-butene in highest yield. Which reagents would you use? O KOH/H2O O KOH/CH,OH O CH3CH2ONA/CH3CH2OH O CH3ONA/CH3OH O (CH3)3COK/(CH3)3COHIn both examples below the reactants shown are combined to bring about a nucleophilic substitution (SN1, SN2) and/or elimination (E1, E2) reaction. What is the major reaction that takes place in each case? BrCH₂COCH3 CH3 CH3CH₂CCH3 NaCN CH3OH H₂O SN2 MBr CH2 HBr CH3 Draw curved arrows to show the movement of electrons in this step of the reaction mechanism. Arrow-pushing Instructions CH2 Н— Br:
- Which of the following is the major product of the reaction shown? 1. LİAIH, 2. Н,О, Н* || CH,CH,CH,COH || HOCH,CH,COH HOCH,CH,CH,CH,0H CH,CH,CH,CH,OHQ10. For each of the following reactions (a-b), predict whether the substitution is more likely to occur following an Sn1 or Sn2 mechanism; explain your reasoning. Draw the products of each nucleophilic substitution paying particular attention to the stereochemistry of carbon 1. a) Br, CH3 MeOH H3C b) Br NaOH 1 DMF* H3C *N,N-dimethylformamideStep 4a: Classify step. The target product is present, but the reaction is not over. The ethoxide ion has been regenerated. :0: :0: What is the key process in the next step of the mechanism? proton transfer formation of a o bond between nucleophile and electrophile loss of a leaving group carbocation rearrangement (e.g., methyl or hydride shift)