Draw out the mechanisms for the ortho, para, and meta positions of 2-(2,4-dinitrobenzyl)pyridine. Label which ones are stable forms.
Draw out the mechanisms for the ortho, para, and meta positions of 2-(2,4-dinitrobenzyl)pyridine. Label which ones...
DRAW ALL THE RESONANACE STRUCTURES THAT WOULD RESULT FROM ELECTROPHILIC AROMATIC SUBSTITUTION OF THE ORTHO, META, AND PARA POSITIONS OF THE AROMATIC COMPOUND SHOWN BELOW. IDENTIFY ANY PARTICULAR STABLE OR UNSTABLE INTERMEDIATES AND DETERMINE IF THE SUBSTITUTION IS ORTHO, PARA, OR META DIRECTING BASED ON THE RELATIVE STABILITY OF THE INTERMEDIATES. -t Br meta.
Which of the following is an ortho-and Para-director? Which of the following is a meta-director? Which of the following is a meta-deactivating group? Which of the following is an ortho-and para- director and a deactivator? What is(are) the product(s) when the following substance reacts with Br_2 in the presence of FeBr_3? o-bromotoluene only m-bromotoluene only p-bromololuene only an equimolar mixture of o-bromololuene and p-bromotoluene a mixture of o-bromotoluene (minor) and pbromololuene (major)
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,...
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
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
Draw the reaction mechanism of phenol nitration, show the ortho and para mechanisms separately. Include arrows, eletron flow and lone pairs.
The NMR spectrum suggests the formation of the meta-substituted product, but NH2 is an ortho/para directing group. Using the given chemicals, provide a mechanism to arrive at the meta-substituted product. 5. Adam Splidda and Flo Wrene were asked to make 4-aminobenzenesulfonic acid. They came up with the plan below. The Plan: NH2 SO3 NH2 H2SO4 HO3S 4-aminobenzenesulfonic acid The product: S, 1H t, 1H s, 2H d d, 1H 1H s, 1H 0 4 PPM Were they successful? Draw the...
2. Compound A reacts with E+ to form the ortho and meta intermediates shown below. ENN Orice om contato M1 M2 The least stable intermediate is ___, which tells me the CN group is a director. Check two (2) boxes. N 01 (blank 1) O O 02 (blank 1) 03 (blank 1) 04 (blank 1) M1 (blank 1) M2 (blank 1) M3 (blank 1) M4 (blank 1) O ortho, para (blank 2) O meta (blank 2)
8. Provide a synthetic route to the desired compound using benzene and acetic acid as the starting materials. You don't have to draw the mechanisms. (If you get ortho- and para- mixture at a key step or steps, you may choose the isomer that you need to move forward.) C1 8. Provide a synthetic route to the desired compound using benzene and acetic acid as the starting materials. You don't have to draw the mechanisms. (If you get ortho- and...
For the nitration of methyl benzoate, draw the sigma complex (the reactive intermediate) which results from attack at the ortho, the meta, and the para positions. For each sigma complex, draw all appropriate resonance structures. Circle any "high energy'' resonance structures.