(a)
Interpretation:
The structure of products of given reaction should be drawn.
Concept Introduction:
Terminal
The acetylide carbanion is a good nucleophile and can undergo nucleophilic substitution reactions (usually SN2) with 1o or 2o
3o alkyl halides are more likely to undergo elimination.
One or both of the terminal H atoms in ethylene
The
(b)
Interpretation:
Two sets of reactants that could be used to synthesize a given compound should be given.
Concept Introduction:
Terminal alkynes are unusual for simple hydrocarbons in that they can be deprotonated using an appropriate base (typically
The acetylide carbanion is a good nucleophile and can undergo nucleophilic substitution reactions (usually SN2) with 1o or 2o alkyl halides (
3o alkyl halides are more likely to undergo elimination.
One or both of the terminal H atoms in ethylene
The
(c)
Interpretation:
Two sets of reactants that could be used to synthesize a given compound should be given.
Concept Introduction:
Terminal alkynes are unusual for simple hydrocarbons in that they can be deprotonated using an appropriate base (typically
The acetylide carbanion is a good nucleophile and can undergo nucleophilic substitution reactions (usually SN2) with 1o or 2o alkyl halides (
3o alkyl halides are more likely to undergo elimination.
One or both of the terminal H atoms in ethylene
The
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ORGANIC CHEMISTRY (LL)-W/STUDY GUIDE
- Draw and Explain the reaction mechanism for the Williamson Ether reaction. Cresol is the nucleophilic component of the ether synthesis reaction and chloroacetic acid is the electrophilic component. Due to cresol being weak, a strong nucleophile has to be made before the reaction can begin. A base of KOH is added with cresol so that nucleophile can be strong before it is mixed with chloroacetic acid.arrow_forwardDraw the mechanism of the following transformation using a Wittig reagent.arrow_forwardDraw the product(s) that result from a rearrangement in the following reaction.arrow_forward
- Draw the MAJOR product for each transformation.arrow_forwardDraw out the productarrow_forwardAnswer the following question about curcumin, a yellow pigmentisolated from turmeric, a tropical perennial in the ginger family and aprincipal ingredient in curry powder. Most enols, compounds that contain a hydroxy group bonded to a C=C, are unstable and tautomerize to carbonyl groups. Draw the keto form of the enol of curcumin, and explain why the enol is more stable than many other enols.arrow_forward
- Synthesizing an Ether by a Two-Step Reaction Sequence Draw the product of the following two-step reaction sequence.arrow_forwardDraw the major product of each reaction below.arrow_forwardAnswer the following questions about curcumin, a yellow pigment isolated from turmeric, a tropical perennial in the ginger family and a principal ingredient in curry powder.a.In Chapter 11, we learned that most enols, compounds that contain a hydroxy group bonded to a C=C, are unstable and tautomerize to carbonyl groups. Draw the keto form of the enol of curcumin, and explain why the enol is more stable than many other enols. b.Explain why the enol O—H proton is more acidic than an alcohol O—H proton. c. Why is curcumin colored? d.Explain why curcumin is an antioxidant.arrow_forward
- In the first step of a Wittig reaction, what will happen if you use chlorobenzene instead of benzyl chloride? Why a) the yield will increase, because chlorobenzene is a better nucleophile b) yield will be slightly decreased, because chlorobenzene is a poorer nucleophile c) no product will form, chlorobenzene cannot be converted to a phosphonium chloride salt d) no alkene product will form the phosphonium salt from chlorobenzene reacts with chloro benzene to form triphenyl magnesium chloride. e) no noticable change will be detected, benzyl chloride and chlorobenzene are essentially the same compoundsarrow_forward15.6 (pqr) Predict the major product or reagent that completes the transformationarrow_forwardFor each reaction draw the expected product .arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning