2.27 (b) (a) -H H CH3-C-CEN (e) (f) (d) 2.27 In the compounds shown below, the...
(b) (a) -H H CH3-C-CEN (e) (f) (d) 2.27 In the compounds shown below, the six-membered rings are called benzene rings. Such rings are commonly found in natural products, and we will learn more about the remarkable stability of these ring systems in Chapter 17. Because of resonance effects with the attached groups, one of the benzene rings shown is electron-rich and the other is electron-poor. Draw the significant resonance contribu- tors for each to determine which is which. Use 8- and 8+ sym- bols to indicate any electron-rich and electron-deficient sites, respectively OH 2.28 Valderramenol A, a natural product that was isolated from the leaves of a plant native to the Philippines, was found to be antitubercular (can be used to treat tuberculosis). The structure of valderramenol A contains two benzene rings. Using resonance, demonstrate which ring is more electron-rich and which ring is more electron.dafigi
(b) (a) -H H CH3-C-CEN (e) (f) (d) 2.27 In the compounds shown below, the six-membered rings are called benzene rings. Such rings are commonly found in natural products, and we will learn more about the remarkable stability of these ring systems in Chapter 17. Because of resonance effects with the attached groups, one of the benzene rings shown is electron-rich and the other is electron-poor. Draw the significant resonance contribu- tors for each to determine which is which. Use 8- and 8+ sym- bols to indicate any electron-rich and electron-deficient sites, respectively OH 2.28 Valderramenol A, a natural product that was isolated from the leaves of a plant native to the Philippines, was found to be antitubercular (can be used to treat tuberculosis). The structure of valderramenol A contains two benzene rings. Using resonance, demonstrate which ring is more electron-rich and which ring is more electron.dafigi