The following compound is an intermediate in the synthesis of a gelator, which is a compound capable of self-assembling to forma gel in an organic liquid (Soft Matter 2012, 8,5486-5492). оснасн. CH(CH), CH,(CH), 2.86a Choose the functional groups present in the given molecule. Aldehyde, amide, aromatic ring, ether Aldehyde, amide, alcohol, ether Amine, aromatic ring ether, ketone Aldehyde, amide, ether e Textbook and Media Hint Attempts: 0 of 1 used Submit Are
Current Attempt in Progress The following compound is an amino acid derivative. In solution, molecules of this compound show a tendency to "stick together, or self-assemble, via a series of intermolecular hydrogen bonds. During self-assembly, the growing aggregate can entrap molecules of liquid, thereby forming a gel (.Am. Chem. Soc. 2009, 131, 11478-11484). 2.87a Each of the six hydrogen atoms bound directly to nitrogen can form a hydrogen bond, but Hatoms that are on the amides can form stronger hydrogen bonds than Hatoms on the amines. Explain why this is so using resonance The on an amide His greater than that on an amine H. The 0+ on an amide His lesser than that on an amine H O on the amide nitrogen doesn't pull the electrons in the N-H bond closer to the nitrogen atom 0 - on the amide nitrogen pulls the electrons in the N-H bond closer to the nitrogen atom, leaving the hydrogen atom with a lesser - e Textbook and Media
Current Attempt in Progress In Chapter 3, we will explore the factors that render compounds acidic or basic. Tropolone (1) is a compound that is both fairly acidic and fairly basic U. Org. Chem. 1997,62,3200-3207). It is acidic because it is capable of losing a proton (H) to form a relatively stable anion (2), while it is basic because of its ability to receive a proton to form cation 3: 2 3 Draw all significant resonance structures of anion 2 and of cation 3 and explain why each of these lons is stabilized. 2881 Show albore the sigblantrene structures of anion 2. Add missing one pairs and provide curved arrows to convert eacht structure to the
Shown below are the significant resonance structures of anion 2. Add missing lone pairs, and provide curved arrows to convert each structure to the next. 1 Edit Drawing
Basic red 1 is a tetracyclic compound it has four rings) that shares many structural similarities with the dyes in the previous problem (Chem. Rev. 1993, 93, 381-4331. This compound has many significant resonance structures, and the positive charge is highly delocalized. While resonance structures can be drawn in which the positive charge is spread throughout all four rings, nonetheless, one of the rings likely bears very little of the charge relative to the other rings, Identify the ring that is not participating as effectively in resonance. boot СА OB Ос OD
Explain why this ring is not participating as effectively in resonance. CI Bogor O Ring D is too far away from the positive charge to be involved in resonance. There is additional resonance stabilization because of ester group in ring D. O Because of crowding, ring Dis out of planarity of other three rings and the p orbitals don't overlap. O Ring D is not participating in resonance because the positive charge would be unstable there. Hint
Atenolol and enalapril are drugs used in the treatment of heart disease. Both of these drugs lower blood pressure (albeit in different ways) and reduce the risk of heart attack. Using Table 2.1, identify and label all functional groups in these two compounds. 2.07a -NH25 3 1 H OH 2. Atenolol 1 2 3. 4. 5.
Select the functional group(s) present in each highlighted region. o 09 N D HO E Enalapril V A. B. C. D. E. Save for Later Attempts: 0 of 1 to search
In each case below, identify the correct curved arrow(s) that generate(s) the resonance structure(s) shown:
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Question 6 of 45 く - 14 E G-02- 10.19
