In nitration of acetanilide(synthesis of p-nitroaniline) main product is ortho and para. Explain why ortho and...
Which of the nitroaniline isomers, the ortho-nitroaniline or para-nitroaniline, is the major product? Clearly state your evidence for your answer.
Draw the two step mechanism for the nitration of bromobenze to give the para product. Draw the four major resonance contributers for the intermediate cation. Circle the resonance structure that is particularlt stable, and explain the reasoning.
If bromine is an EWG, why does the nitration of bromobenzene result is para and ortho products in an Electrophilic Aromatic Substitution reaction?
1. On development of the TLC plates for ortho- and para-nitroaniline, which isomer travelled faster? Why? What was the solvent? What is the thin layer made of? (4 pts) 2. 1.000 grams of acetone was reacted with 3.651 grams of benzaldehyde in a mixture of water and ethanol and an excess NaOH. The isolated dibenzalacetone product was 2.015 grams. What was the limiting factor? What is the structural formula of the product? What was the yield as percent of theoretical?...
8. Propose a mechanism for the nitration of anisole to give ortho and para nitroanisole. (10 pts) OCH HNO3 H2SO4
Problem 1: para-Nitroaniline is an order of magnitude less basic than meta-nitroaniline. Explain the observed difference in basicity. Also, would you expect the basicity of ortho-nitroaniline to be closer in value to meta-or para-nitroaniline (5 points)
Draw the reaction mechanism of phenol nitration, show the ortho and para mechanisms separately. Include arrows, eletron flow and lone pairs.
(1) Discuss the directing effects of the acetamide group on acetanilide and explain why the para-substituted product is the expected major product in the bromination reaction. (2) Discuss the limitations of brominating aromatic compounds that contain very electron rich substituents.
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
Post Lab Questions for Nitration of Acetanilide, Nitration of Methyl Benzoate, Nitration of Phenylacetonitrile, Nitration of Phenol. 1. What product(s) do you expect to be formed in the nitration of phenol? Why? 2. All three of the nitrophenols have boiling points well above 200°C. Explain clearly why it was possible to distill something with such a high boiling point when the temperature of the distillate never rose much above 100°C. 3. What product did you actually obtain in the distillate?...