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3. Classify the following substituents as orthol para activating, ortho/para deactivating meta deactivating. CN F Show...
The carboxymethyl group is directing and HNO3 H2SO4 meta; deactivating meta; activating para; activating • ortho; deactivating
Label the following as activating (A) or deactivating (D), and then also as ortho/para directors (OP) or meta directors (M). Write the answer below each group. N "Here with other ty A/D? = = = = OP/M? = f) Using resonance structures, explain why a nitro group is "meta-directing" (i.e. does the nitro group actually affect the meta positions?) g) As mentioned in class, the halogens are a bit anomalous as substituents on the aromatic ring: they are deactivating groups,...
Are these groups activating or deactivating, ortho/para or meta directors? Table 2 EAS data and results. Compound Structure of the Compound ЗаliИТА 0 ОТАРІЯ Activating Ortho/para or Deactivating Or meta director Toluene Aniline Phenyl Acetate Acetanilide Anisole OCHZ slom 2A Methyl Benzoate ctly Acetophenone Benzaldehyde Yяонт abilind Chlorobenzene (agasi. q. sb): A
An NH2 substituent in an aromatic ring is: Select one: a. activating ortho-, meta- and para-directing b. deactivating and ortho- and para-directing c. deactivating and meta-directing d. activating and meta-directing e. activating and ortho- and para-directing
An acyl group is Strongly deactivating and it is meta and it is meta directing strongly deactivating weakly activating The ring with C NisTmoderately activating ▼ and it is ortho-para ▼ directi n strongly deactivating moderately deactivating ortho-para meta para moderately activating
Classify each substituent as ortho, para activators; ortho, para deactivators; or meta deactivators. ortho, para activators ortho, para deactivators meta deactivators CHO COon NH2 C(CH3)a
Objectives - Section 1 • Identify a substituent as an ortho para director or a meta director, Draw the resonance structure that explains the relative directing ability of a specific substituent. Classify a substituent as an activating or a deactivating group. Explain why the halogens are ortho/para directors but are deactivators. • 1. Draw the mechanism of the reaction below and use resonance structures of the arenium ion intermediate to explain why the starting material is an ortho/para director
2. D type and strength of each substituents as activating(A) or outcome as ortho-para (O/P) or meta(M) directors. (6 pts) you expect an electrophile to be attached to the ring You must identify the deactivating(D) and also the expected regiochemical 3. Use aromatic, non aromatic or antiaromatic concepts to explain the reactions or molecules shown (6 pts) Provide a curved arrow mechanism to show the formation of a aromatic carbocation intermediate Show the final product H-I The pK,values for the...
Activating groups "speed up" electrophilic substitution of aromatics and deactivating groups "slow down" electrophilic substitution. 1. Ignoring halogens, what is different between the composition of the ortho-para directors and the meta directors? 2. What causes the deactivating groups to "slow down" the substitution? What may be used to speed up these reactions? 3. How does carbocation stabilization affect the orientation of the products in each orientation? Activating groups Deactivating groups ortho-, para- directors -hydroxyl (OH) -alkoxy (OR) -amino (NH2, NR)...
1) Indicate whether the following substituent is activating or deactivating. Also indicate if it is an ortho/para or meta director. ouger 2) Predict the major product(s) in the following reactions. KMnO4 Ø Googlol NO2 Pd-C Fe Bra H₂SO4 Zn(y) HCL