Concept explainers
(a)
Interpretation: The enol form of compound (a) is to be drawn.
Concept introduction: The
(b)
Interpretation: The enol forms of compound (b) are to be drawn.
Concept introduction: The chemical equilibrium that exists between a keto form of a compound and an enol form of the same compound is known as keto-enol tautomerism. Tautomers refer to these keto and enol forms.
(c)
Interpretation: The keto form of compound (c) is to be drawn.
Concept introduction: The chemical equilibrium that exists between a keto form of a compound and an enol form of the same compound is known as keto-enol tautomerism. Tautomers refer to these keto and enol forms.
(d)
Interpretation: The keto form of compound (d) is to be drawn.
Concept introduction: The chemical equilibrium that exists between a keto form of a compound and an enol form of the same compound is known as keto-enol tautomerism. Tautomers refer to these keto and enol forms.
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Check out a sample textbook solutionChapter 11 Solutions
Organic Chemistry
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- Draw the products formed when A or B is treated with each reagent. In some cases, no reaction occurs. [1] C6H5Li (excess); [2] H2Oarrow_forward(a) Give an acceptable name for each compound, (b) Draw the organic products formed when A or B is treated with each reagent: [1] H3O+; [2] −OH, H2O; [3] CH3CH2CH2MgBr (excess), then H2O; [4] LiAlH4, then H2O.arrow_forwardDraw the product formed when (CH3)2CHOH is treated with each reagent. a.SOCl2, pyridine b. TsCl, pyridine c.H2SO4 d.HBr e.PBr3, then NaCN f.POCl3, pyridinearrow_forward
- Draw the product formed when (CH3)2CHOH is treated with each reagent. a. SOCl2, pyridine b. TsCl, pyridine c. H2SO4 d. HBr e. PBr3, then NaCN f. POCl3, pyridinearrow_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_forwardDraw the enol tautomer of (a) and the keto tautomer of (b).arrow_forward
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