Concept explainers
Interpretation: A stepwise mechanism for the reaction between benzyl bromide and
Concept introduction: The replacement or substitution of one
Want to see the full answer?
Check out a sample textbook solutionChapter 18 Solutions
Package: Loose Leaf for Organic Chemistry with Biological Topics with Connect Access Card
- Match the reagents to the product shown in each reaction. A B D OH F CI D B [Choose ] SOCI2 C 2 eq (CH3)2NH 2 eq CH3NH2 H2O нс, н20 СН3ОН 2q NH3 CH3COO- HCI, CH3OH NH₂ # SOHarrow_forwardWhich reactant in each of the following pairs is more nucleophilic? Explain. (a) -NH2 or NH3 (b) H2O or CH3CO2- (c) BF3 or F- (d) (CH3)3P or (CH3)3N (e) I- or Cl- (f) -C≡N or -OCH3arrow_forwardFluoxetine, a heavily prescribed antidepressant marketed under the name Prozac, can be prepared by a route that begins with reaction between a phenol and an alkyl chloride. (a) The rate of the reaction depends on both phenol and alkyl halide. Is this an SN1 or an SN2 reaction? Show the mechanism. (b) The physiologically active enantiomer of fluoxetine has (S) stereochemistry. Based on your answer in part (a), draw the structure of the alkyl chloride you would need, showing the correct stereochemistry.arrow_forward
- Determine a stepwise mechanism for the following reaction that illustrates why two substitution products are formed. Explain why 1-bromohex-2-ene reacts rapidly with a weak nucleophile (CH3OH) under Syl reaction conditions, even though it is a 1° alkyl halide. 1-bromohex-2-ene Part 1: Br CH₂OH The first step in the reaction proceeds according to which mechanism? CH₂CH₂CH₂CH=CHCH₂ + CH₂OH CH₂CH₂CH₂CH: Part 2: Br CHCH₂ Draw the missing resonance contributor. OCH3 + CH3CH₂CH₂CH=CHCH₂ CH3CH₂CH₂CH=CH-CH₂ + Br Br OCH 3 H₂CH₂CH₂CH=CH₂ view structure + + Br HBr Xarrow_forwardThe Favorskiireaction involves treatment of an a-bromo ketone with base to yield a ring-contracted product. For example, reaction of 2-bromocyclohexanone with aqueous NaOH yields cyclopentanecarboxylic acid.what is the mechanism of the reaction.arrow_forwardEven though B contains three ester groups, a single Dieckmann product results when B is treated with NaOCH3 in CH3OH, followed by H3O+. Draw the structure and explain why it is the only product formed.arrow_forward
- Which reagent would best accomplish the following transformation?arrow_forwardRank the following esters in order of decreasing reactivity in the first slow step of a nucleophilic acyl substitution reaction (formation of the tetrahedral intermediate):Rank the same esters in order of decreasing reactivity in the second slow step of a nucleophilic acyl substitution reaction (collapse of the tetrahedral intermediate).arrow_forwardGive the major products or reagents represented by letters C and D :arrow_forward
- What is the reagent for the following reaction? NH₂ SOCI₂ ملم من سالي ملي NHSOCI Шarrow_forwardA vicinal diol has OH groups on adjacent carbons. The dehydration of a vicinal diol is accompanied by a rearrangement called the pinacol rearrangement. Propose a mechanism for this reaction.arrow_forwardH3C- H3C. OCH 3 H3CO CH3 H Aldehydes and ketones react reversibly with two equivalents of alcohol in the presence of an acid catalyst to give acetals. Alcohols are poor nucleophiles, and so protonation of the carbonyl oxygen is used to make the carbonyl carbon a stronger electrophile. Addition of the first equivalent of alcohol gives a hemiacetal, a hydroxyether. Addition of the second equivalent of alcohol is accompanied by loss of water to yield the product acetal. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions NA 2 CH₂OH HCI catalyst CH3 HỘ H3CQ H3C- H3CO CH3 H3C. OCH3 CH3 H₂O*: 45arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning